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    <h3><img alt="" src="../sun.gif" align="middle" height="98"
        width="100"> Command Line Options</h3>
    <blockquote>
      <p>DS9 will process each command line option, one at a time, as
        the last step in the initialization process. Therefore, it is
        possible to use command line options as a little script. For
        example, the following command line option is used:</p>
      <tt>$ds9 -tile foo.fits -cmap Heat -zscale bar.fits -cmap I8</tt>
      <p>First DS9 is put in tile mode, then <tt>foo.fits</tt> is
        loaded. Then the colormap for <tt>foo.fits</tt> is changed to <tt>Heat</tt>
        and the scale changed to <tt>zscale</tt>. Next, <tt>bar.fits</tt>
        is loaded and the colormap for <tt>bar.fits</tt> is changed to
        <tt>I8.</tt> </p>
      <tt> <a href="#2mass">2mass</a><br>
        <a href="#3d">3d</a><br>
        <a href="#about">about</a><br>
        <a href="#align">align</a><br>
        <a href="#analysis">analysis</a><br>
        <a href="#array">array</a><br>
        <a href="#asinh">asinh</a><br>
        <a href="#background">background</a><br>
        <a href="#backup">backup</a><br>
        <a href="#bin">bin</a><br>
        <a href="#blink">blink</a><br>
        <a href="#block">block</a><br>
        <a href="#blue">blue</a><br>
        <a href="#catalog">catalog</a><br>
        <a href="#cd">cd</a><br>
        <a href="#cmap">cmap</a><br>
        <a href="#colorbar">colorbar</a><br>
        <a href="#console">console</a><br>
        <a href="#contour">contour</a><br>
        <a href="#crop">crop</a><br>
        <a href="#crosshair">crosshair</a><br>
        <a href="#cube">cube</a><br>
        <a href="#cursor">cursor</a><br>
        <a href="#dsssao">dsssao</a><br>
        <a href="#dsseso">dsseso</a><br>
        <a href="#dssstsci">dssstsci</a><br>
        <a href="#envi">envi</a><br>
        <a href="#exit">exit</a><br>
        <a href="#export">export</a><br>
        <a href="#fifo">fifo</a><br>
        <a href="#fifo_only">fifo_only</a><br>
        <a href="#fits">fits</a><br>
        <a href="#frame">frame</a><br>
        <a href="#geometry">geometry</a><br>
        <a href="#gif">gif</a><br>
        <a href="#green">green</a><br>
        <a href="#geometry">grid</a><br>
        <a href="#header">header</a><br>
        <a href="#height">height</a><br>
        <a href="#help">help</a><br>
        <a href="#histequ">histequ</a><br>
        <a href="#iconify">iconify</a><br>
        <a href="#import">import</a><br>
        <a href="#inet_only">inet_only</a><br>
        <a href="#invert">invert</a><br>
        <a href="#iis">iis</a><br>
        <a href="#jpeg">jpeg</a><br>
        <a href="#language">language</a><br>
        <a href="#linear">linear</a><br>
        <a href="#lock">lock</a><br>
        <a href="#log">log</a><br>
        <a href="#lower">lower</a><br>
        <a href="#magnifier">magnifier</a><br>
        <a href="#mask">mask</a><br>
        <a href="#match">match</a><br>
        <a href="#mecube">mecube</a><br>
        <a href="#minmax">minmax</a><br>
        <a href="#mode">mode</a><br>
        <a href="#mosaic">mosaic</a><br>
        <a href="#mosaicimage">mosaicimage</a><br>
        <a href="#movie">movie</a><br>
        <a href="#msg">msg</a><br>
        <a href="#multiframe">multiframe</a><br>
        <a href="#nameserver">nameserver</a><br>
        <a href="#nan">nan</a><br>
        <a href="#nrrd">nrrd</a><br>
        <a href="#nvss">nvss</a><br>
        <a href="#orient">orient</a><br>
        <a href="#pagesetup">pagesetup</a><br>
        <a href="#pan">pan</a><br>
        <a href="#pixeltable">pixeltable</a><br>
        <a href="#plot">plot</a><br>
        <a href="#png">png</a><br>
        <a href="#prefs">prefs</a><br>
        <a href="#preserve">preserve</a><br>
        <a href="#psprint">psprint</a><br>
        <a href="#print">print</a><br>
        <a href="#private">private</a><br>
        <a href="#port">port</a><br>
        <a href="#port_only">port_only</a><br>
        <a href="#pow">pow</a><br>
        <a href="#exit">quit</a><br>
        <a href="#raise">raise</a><br>
        <a href="#regions">regions</a><br>
        <a href="#red">red</a><br>
        <a href="#restore">restore</a><br>
        <a href="#rgb">rgb</a><br>
        <a href="#rgbarray">rgbarray</a><br>
        <a href="#rgbcube">rgbcube</a><br>
        <a href="#rgbimage">rgbimage</a><br>
        <a href="#rotate">rotate</a><br>
        <a href="#samp">samp</a><br>
        <a href="#save">save</a><br>
        <a href="#saveimage">saveimage</a><br>
        <a href="#scale">scale</a><br>
        <a href="#shm">shm</a><br>
      </tt><tt><tt><a href="#sia">sia</a><br>
        </tt> <a href="#single">single</a><br>
        <a href="#sinh">sinh</a><br>
        <a href="#skyview">skyview</a><br>
        <a href="#sleep">sleep</a><br>
        <a href="#slice">slice</a><br>
        <a href="#smooth">smooth</a><br>
        <a href="#squared">squared</a><br>
        <a href="#sqrt">sqrt</a><br>
        <a href="#source">source</a><br>
        <a href="#tcl">tcl</a><br>
        <a href="#threads">threads</a><br>
        <a href="#tiff">tiff</a><br>
        <a href="#tile">tile</a><br>
        <a href="#title">title</a><br>
        <a href="#unix">unix</a><br>
        <a href="#unix_only">unix_only</a><br>
        <a href="#update">update</a><br>
        <a href="#url">url</a><br>
        <a href="#version">version</a><br>
        <a href="#view">view</a><br>
        <a href="#visual">visual</a><br>
        <a href="#vla">vla</a><br>
      </tt><tt><tt><a href="#vlss">vlss</a><br>
        </tt><a href="#vo">vo</a><br>
        <a href="#wcs">wcs</a><br>
        <a href="#web">web</a><br>
        <a href="#width">width</a><br>
        <a href="#xpa">xpa</a><br>
        <a href="#zmax">zmax</a><br>
        <a href="#zoom">zoom</a><br>
        <a href="#zscale">zscale</a><br>
      </tt>
      <p><b><a name="2mass"></a>2mass </b></p>
      <p>Support for 2MASS Digital Sky Survey.</p>
      <tt> Syntax: <br>
        -2mass []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord &lt;ra&gt;
        &lt;dec&gt; degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update frame|crosshair]<br>
        &nbsp; &nbsp;&nbsp; &nbsp; [survey j|h|k] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -2mass<br>
        $ds9 -2mass m31 <br>
        $ds9 -2mass name m31 <br>
        $ds9 -2mass coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -2mass size 60 60 arcmin<br>
        $ds9 -2mass save yes<br>
        $ds9 -2mass frame current<br>
        $ds9 -2mass update frame<br>
        $ds9 -2mass survey j<br>
        $ds9 -2mass open<br>
        $ds9 -2mass close<br>
      </tt>
      <p><b><a name="3d"></a>3d </b></p>
      <p>Support for 3D frame.</p>
      <tt> Syntax: <br>
      </tt><tt>-3d []<br>
        &nbsp;&nbsp;&nbsp; [view &lt;az&gt; &lt;el&gt;]<br>
        &nbsp;&nbsp;&nbsp; [az &lt;az&gt;]<br>
        &nbsp;&nbsp;&nbsp; [el &lt;el&gt;]<br>
        &nbsp;&nbsp;&nbsp; [scale &lt;scale&gt;]<br>
        &nbsp;&nbsp;&nbsp; [method mip|aip]</tt><br>
      <tt><tt>&nbsp;&nbsp;&nbsp; [background none|azimuth|elevation]<br>
        </tt>&nbsp;</tt><tt>&nbsp;&nbsp; [border yes|no]<br>
        &nbsp;&nbsp;&nbsp; [border color]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; [highlite yes|no]<br>
        &nbsp;&nbsp;&nbsp; [highlite color]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; [open|close]<br>
      </tt><tt>&nbsp; <br>
        Example:<br>
        $ds9 -3d # create new 3D frame<br>
        $ds9 -3d view 45 30<br>
        $ds9 -3d az 45<br>
        $ds9 -3d el 30<br>
        $ds9 -3d scale 10<br>
        $ds9 -3d method mip</tt><br>
      <tt>$ds9 -3d background azimuth<br>
      </tt><tt>$ds9 -3d border yes<br>
        $ds9 -3d border color red<br>
      </tt> <tt>$ds9 -3d highlite yes<br>
        $ds9 -3d highlite color red<br>
      </tt> <tt>$ds9 -3d open<br>
        $ds9 -3d close</tt><br>
      <p><b><a name="about"></a>about</b></p>
      <p>Get DS9 credits.</p>
      <tt> Syntax: <br>
        -about <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -about<br>
      </tt>
      <p><b> <a name="align"></a>align</b></p>
      <p>Controls the World Coordinate System alignment for the current
        frame.</p>
      <tt> Syntax: <br>
        -align [yes|no]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -align yes <br>
      </tt>
      <p><b> <a name="analysis"></a>analysis</b></p>
      <p>Control external analysis tasks. Tasks are numbered as they are
        loaded, starting with 0. Can also be used to display a message
        and display text in the text dialog window. </p>
      <tt> Syntax: <br>
        -analysis [&lt;task number&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [&lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; [task &lt;task
        number&gt;|&lt;task name&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [load
        &lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [clear] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [clear][load &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [message
        ok|okcancel|yesno &lt;message&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [entry
        &lt;message&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [text]</tt><tt><tt><tt><tt><tt><br>
              </tt></tt> &nbsp; </tt></tt><br>
        Example:<br>
        $ds9 -analysis 0 # invoke first analysis task<br>
        $ds9 -analysis task 0<br>
      </tt><tt>$ds9 -analysis task foobar<br>
      </tt><tt>$ds9 -analysis task "{foo bar}"<br>
        $ds9 -analysis my.ans<br>
        $ds9 -analysis load my.ans <br>
        $ds9 -analysis clear <br>
        $ds9 -analysis clear load my.ans<br>
        $ds9 -analysis message '{This is a message}'<br>
        $ds9 -analysis message okcancel '{This is a message}'<br>
        $ds9 -analysis text '{This is text}'</tt><tt><br>
      </tt>
      <p><b> <a name="array"></a>array</b></p>
      <p>Load raw data array into current frame.<br>
      </p>
      <tt> Syntax:<br>
        -array
&lt;filename&gt;[[xdim=&lt;x&gt;,ydim=&lt;y&gt;|dim=&lt;dim&gt;],zdim=&lt;z&gt;,bitpix=&lt;b&gt;,skip=&lt;s&gt;,endian=[little|big]]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -array foo.arr[dim=512,bitpix=-32,endian=little]</tt><br>
      <tt>$cat foo.arr | ds9 -array -[dim=512,bitpix=-32,endian=little]</tt><tt><br>
      </tt>
      <p><b> <a name="asinh"></a></b><b>asinh</b> </p>
      <p>Select ASINH scale function for the current frame.</p>
      <tt> Syntax:<br>
        -asinh <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -asinh</tt><br>
      <p><b><a name="background"></a>bg<br>
          background</b></p>
      <p>Set image background color. </p>
      <tt> Syntax: <br>
        -bg &lt;color&gt;<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -background red<br>
        $ds9 -bg red</tt><br>
      <p><b> <a name="backup"></a>backup</b></p>
      <p>Create a backup save set. </p>
      <tt> Syntax: <br>
        -backup &lt;filename&gt;<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -backup ds9.bck</tt><br>
      <p><b> <a name="bin"></a>bin</b></p>
      <p>Controls binning factor, binning buffer size, and&nbsp; binning
        function for binning FITS bin tables. </p>
      <tt> Syntax: <br>
        -bin [about &lt;x&gt; &lt;y&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [about center]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [buffersize &lt;value&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [cols &lt;x&gt; &lt;y&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [colsz &lt;x&gt; &lt;y&gt; &lt;z&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [factor &lt;value&gt; [&lt;value&gt;]]
        <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [depth &lt;value&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [filter &lt;string&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [function average|sum] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [in]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [out]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [to fit] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [match]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [lock [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -bin about 4096 4096<br>
        $ds9 -bin about center<br>
        $ds9 -bin buffersize 512<br>
        $ds9 -bin cols detx dety<br>
        $ds9 -bin colsz detx dety time<br>
        $ds9 -bin factor 4<br>
        $ds9 -bin factor 4 2<br>
        $ds9 -bin depth 10<br>
        $ds9 -bin filter 'pha &gt; 5'<br>
        $ds9 -bin filter ''<br>
        $ds9 -bin function sum<br>
      </tt><tt><tt>$ds9 -bin in<br>
          $ds9 -bin out<br>
        </tt>$ds9 -bin to fit<br>
        $ds9 -bin match<br>
        $ds9 -bin lock yes<br>
        $ds9 -bin open<br>
        $ds9 -bin close<br>
      </tt>
      <p><b> <a name="blink"></a>blink</b></p>
      <p>Blink mode parameters. Interval is in seconds.</p>
      <tt> Syntax: <br>
        -blink []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [interval &lt;value&gt;]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -blink<br>
        $ds9 -blink yes<br>
        $ds9 -blink interval 1</tt><br>
      <p><b> <a name="block"></a>block</b></p>
      <p>Controls blocking parameters. </p>
      <tt> Syntax: <br>
        -block</tt><tt><tt> [&lt;value&gt;] <br>
          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;value&gt;
          &lt;value&gt;]<br>
          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to &lt;value&gt;] <br>
          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to &lt;value&gt;
          &lt;value&gt;]<br>
          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [in]<br>
          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [out]<br>
        </tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to fit] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp; <br>
        Example: <br>
      </tt><tt>$ds9 </tt><tt><tt><tt>-block</tt></tt> 4<br>
        $ds9 </tt><tt><tt><tt>-block</tt></tt> 4 2<br>
      </tt><tt><tt><tt>$ds9 </tt><tt><tt><tt>-block</tt></tt> to 4<br>
            $ds9 </tt><tt><tt><tt>-block</tt></tt> to 4 2<br>
          </tt>$ds9 </tt><tt><tt><tt>-block</tt></tt> in<br>
        </tt></tt><tt><tt><tt>$ds9 </tt><tt><tt><tt>-block</tt></tt>
            out<br>
          </tt></tt>$ds9 </tt><tt><tt><tt>-block</tt></tt> to fit<br>
        $ds9 </tt><tt><tt><tt>-block</tt></tt> match<br>
        $ds9 </tt><tt><tt><tt>-block</tt></tt> lock yes<br>
        $ds9 </tt><tt><tt><tt>-block</tt></tt> open<br>
        $ds9 </tt><tt><tt><tt>-block</tt></tt> close</tt><tt><br>
      </tt> <b> </b>
      <p><b> <a name="blue"></a>blue</b></p>
      <p>For RGB frames, sets the current color channel to blue.</p>
      <tt> Syntax: <br>
        -blue<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -blue foo.fits<br>
      </tt>
      <p><b> <a name="catalog"></a>catalog<br>
          cat</b></p>
      <p>Support for catalogs. The first three commands will create a
        new catalog search. All other commands operated on the last
        search created, unless indicated otherwise.</p>
      <tt> Syntax: <br>
      </tt><tt>-catalog []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [ned|simbad|denis|skybot]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [ascss|cmc|gsc1|gsc2|gsc3|ac|nomad|ppmx|sao|sdss5|sdss6|</tt><tt>sdss7|sdss8|</tt><tt>tycho|ua2|ub1|ucac2]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [2mass|iras]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [csc|xmm|rosat]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [first|nvss]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
        [chandralog|cfhtlog|esolog|stlog|xmmlog]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [cds &lt;catalogname&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [cds
        &lt;catalogid&gt;]<br>
        <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [load &lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [import sb|tsv
        &lt;filename&gt;]<br>
        <br>
      </tt><tt>&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [allcols]<br>
      </tt><tt>&nbsp;</tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;
        [&lt;ref&gt;] [allrows]<br>
        &nbsp;</tt><tt>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [cancel]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [clear]<br>
      </tt><tt>&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; [&lt;ref&gt;] [close]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [coordinate &lt;ra&gt; &lt;dec&gt; &lt;coordsys&gt;]</tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]







































































        [crosshair]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [dec
        &lt;col&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [edit
        yes|no]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [export sb|tsv &lt;filename&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [filter &lt;string&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [filter load
        &lt;filename&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [header]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [hide]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [location
        &lt;code&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [match &lt;ref&gt; &lt;ref&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]







































































        [match error &lt;value&gt; degrees|arcmin|arcsec]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]







































































        [match function 1and2|1not2|2not1]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]







































































        [match return 1and2|1only|2only]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]







































































        [match unique yes|no]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [maxrows
        &lt;number&gt;]</tt><br>
      <tt>&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [name
        &lt;object&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [panto yes|no]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [plot
        &lt;xcol&gt; &lt;ycol&gt; &lt;xerrcol&gt; &lt;yerrcol&gt;]</tt><br>
      <tt>&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [print]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [psky
        &lt;skyframe&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [psystem
        &lt;coordsys&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [ra
        &lt;col&gt;]</tt><br>
      <tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
          [regions]</tt><br>
        <tt> </tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [retrieve]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [samp]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [samp
        broadcast]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [samp
        send &lt;application&gt;]</tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [save &lt;filename&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [server cds|sao|cadc|adac|iucaa|bejing|cambridge|ukirt]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [show]</tt><br>
      <tt>&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [size
        &lt;width&gt; &lt;height&gt; degrees|arcmin|arcsec]</tt><br>
      <tt> </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [sky &lt;skyframe&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [skyformat &lt;skyformat&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [sort
        &lt;col&gt; incr|decr]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [symbol
        [#]
        condition|shape|color|text|font|fontsize|fontweight|fontslant
        &lt;value&gt;] <br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [symbol [#] text|size|size2|units|angle &lt;value&gt;] <br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
        [symbol shape {circle point}|{box point}|{diamond point}|<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; {cross point}|{x
        point}|{arrow point}|{boxcircle point}|<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;
        &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; circle|ellipse|box|text]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [symbol
        add| [#] remove]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [symbol
        save|load &lt;filename&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [system
        &lt;coordsys&gt;]</tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]







































































        [update]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [x
        &lt;col&gt;]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [y
        &lt;col&gt;]</tt><br>
      <tt><br>
        Example:<br>
      </tt><tt>$ds9 -catalog<br>
        $ds9 -catalog 2mass<br>
        $ds9 -catalog cds 2mass<br>
        $ds9 -catalog cds "I/252"<br>
        <br>
      </tt><tt>$ds9 -catalog load foo.xml<br>
        $ds9 -catalog import tsv foo.tsv<br>
        <br>
      </tt><tt>$ds9 -catalog allrows<br>
        $ds9 -catalog allcols<br>
      </tt><tt>$ds9 -catalog cancel<br>
      </tt><tt>$ds9 -catalog clear<br>
      </tt><tt>$ds9 -catalog close<br>
      </tt><tt>$ds9 -catalog coordinate 202.48 47.21 fk5<br>
      </tt><tt>$ds9 -catalog crosshair<br>
      </tt><tt>$ds9 -catalog dec DEC<br>
      </tt><tt>$ds9 -catalog edit yes<br>
      </tt><tt>$ds9 -catalog export tsv bar.tsv<br>
      </tt><tt>$ds9 -catalog filter </tt><tt>'\$Jmag&gt;15'</tt><tt><br>
        $ds9 -catalog filter load foo.flt<br>
        $ds9 -catalog header<br>
      </tt><tt>$ds9 -catalog hide<br>
      </tt><tt>$ds9 -catalog location 500</tt><br>
      <tt>$ds9 -catalog match error 2 arcsec<br>
        $ds9 -catalog match function 1and2<br>
        $ds9 -catalog match unique no<br>
        $ds9 -catalog match return 1only<br>
        $ds9 -catalog match 2mass csc<br>
      </tt><tt>$ds9 -catalog maxrows 2000<br>
      </tt><tt>$ds9 -catalog name m51<br>
        $ds9 -catalog panto no<br>
      </tt><tt>$ds9 -catalog plot </tt><tt>'\$Jmag' '\$Hmag' '\$e_Jmag'
        '\$e_Hmag'</tt><tt><br>
      </tt><tt>$ds9 -catalog print</tt><br>
      <tt>$ds9 -catalog psky fk5</tt><br>
      <tt>$ds9 -catalog psystem wcs</tt><br>
      <tt>$ds9 -catalog ra RA</tt><br>
      <tt><tt>$ds9 -catalog regions<br>
        </tt><tt> </tt>$ds9 -catalog retrieve<br>
      </tt><tt> $ds9 -catalog samp broadcast<br>
        $ds9 -catalog samp send aladin<br>
        $ds9 -catalog save foo.xml<br>
      </tt><tt>$ds9 -catalog server sao<br>
      </tt><tt>$ds9 -catalog show</tt><br>
      <tt> $ds9 -catalog size 1 1 degrees</tt><br>
      <tt>$ds9 -catalog symbol condition '\$Jmag&gt;15'<br>
        $ds9 -catalog symbol 2 shape "boxcircle point"<br>
        $ds9 -catalog symbol color red<br>
        $ds9 -catalog symbol font times<br>
      </tt><tt>$ds9 -catalog symbol fontsize 14<br>
      </tt><tt>$ds9 -catalog symbol fontweight bold<br>
      </tt><tt>$ds9 -catalog symbol fontslant italic<br>
      </tt><tt>$ds9 -catalog symbol add<br>
        $ds9 -catalog symbol 2 remove<br>
        $ds9 -catalog symbol load foo.sym<br>
        $ds9 -catalog symbol save bar.sym</tt><tt><br>
        $ds9 -catalog sky fk5<br>
        $ds9 -catalog skyformat degrees<br>
      </tt><tt>$ds9 -catalog sort "Jmag" incr<br>
      </tt><tt>$ds9 -catalog system wcs</tt><tt><br>
      </tt><tt>$ds9 -catalog update<br>
      </tt><tt>$ds9 -catalog x RA<br>
        $ds9 -catalog y DEC</tt><br>
      <p><b><a name="cd"></a>cd</b></p>
      <p>Sets the current working directory. </p>
      <tt> Syntax: <br>
        cd [&lt;directory&gt;] <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -cd /home/mrbill<br>
      </tt>
      <p><b> <a name="cmap"></a>cmap</b></p>
      <p>Controls the colormap for the current frame. The colormap name
        is not case sensitive. A valid contrast value is&nbsp; from 0 to
        10 and bias value from 0 to 1. </p>
      <tt> Syntax: <br>
        -cmap [&lt;colormap&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [file]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [load &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save &lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [invert yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [value &lt;contrast&gt;
        &lt;bias&gt;] <br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [tag [load|save]
        &lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [tag delete]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock [yes|no]]</tt><br>
      <tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -cmap Heat <br>
        $ds9 -cmap load foo.sao <br>
        $ds9 -cmap save bar.sao<br>
        $ds9 -cmap invert yes <br>
        $ds9 -cmap value 5 .5<br>
        $ds9 -cmap tag load foo.tag<br>
        $ds9 -cmap tag save foo.tag<br>
        $ds9 -cmap tag delete<br>
      </tt><tt>$ds9 -cmap match<br>
        $ds9 -cmap lock yes</tt><br>
      <tt> $ds9 -cmap open<br>
        $ds9 -cmap close<br>
      </tt>
      <p><b><a name="colorbar"></a>colorbar</b></p>
      <p>Controls colorbar parameters.</p>
      <tt> Syntax: <br>
        -colorbar []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [horizontal|vertical]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; [orientation
        horizontal|vertical]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics
        yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; [space
        value|distance]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [font
        times|helvetica|courier]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [fontsize
        &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [fontweight normal|bold]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; [fontslant
        roman|italic]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; [ticks]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -colorbar yes<br>
        $ds9 -colorbar vertical<br>
        $ds9 -colorbar orientation vertical<br>
        $ds9 -colorbar numerics yes<br>
        $ds9 -colorbar space value<br>
        $ds9 -colorbar font times<br>
        $ds9 -colorbar fontsize 14<br>
        $ds9 -colorbar fontweight bold<br>
        $ds9 -colorbar fontslant italic<br>
        $ds9 -colorbar size 20<br>
        $ds9 -colorbar ticks 11<br>
      </tt>
      <p><b> <a name="console"></a>console</b></p>
      <p>Display tcl console window.</p>
      <tt> Syntax: <br>
        -console<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -console<br>
      </tt>
      <p><b> <a name="contour"></a>contour<br>
        </b></p>
      <p>Controls contours in the current frame. </p>
      <tt> Syntax: <br>
        -contour []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [clear]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [generate]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [load
        &lt;filename&gt; [&lt;color&gt; &lt;width&gt; yes|no]]<br>
        &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save
        &lt;filename&gt; &lt;coordsys&gt; &lt;skyframe&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [convert]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [loadlevels
        &lt;filename&gt;]</tt><br>
      <tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
          [savelevels &lt;filename&gt;]<br>
        </tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [copy]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [paste
        &lt;coordsys&gt; [&lt;color&gt; &lt;width&gt; yes|no]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [color
        &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [width
        &lt;width&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [dash yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [smooth
        &lt;smooth&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [method
        block|smooth]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [nlevels &lt;number
        of levels&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [scale
        linear|log|pow|squared|sqrt|asinh|sinh|histequ]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [log exp
        &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [mode
        minmax|&lt;value&gt;|zscale|zmax]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [limits &lt;min&gt;
        &lt;max&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [levels
        &lt;value value value...&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -contour<br>
        $ds9 -contour yes<br>
        $ds9 -contour generate<br>
        $ds9 -contour clear<br>
        $ds9 -contour load ds9.ctr<br>
        $ds9 -contour load ds9.ctr red 2 yes<br>
        $ds9 -contour save ds9.ctr wcs fk5<br>
        $ds9 -contour convert<br>
        $ds9 -contour loadlevels ds9.ctr<br>
      </tt><tt><tt>$ds9 -contour savelevels ds9.lev<br>
        </tt>$ds9 -contour copy<br>
        $ds9 -contour paste wcs red 2 no<br>
        $ds9 -contour color yellow<br>
        $ds9 -contour width 2<br>
        $ds9 -contour dash yes<br>
        $ds9 -contour smooth 5<br>
        $ds9 -contour method smooth<br>
        $ds9 -contour nlevels 10<br>
        $ds9 -contour scale sqrt<br>
        $ds9 -contour log exp 1000<br>
        $ds9 -contour mode zscale<br>
        $ds9 -contour limits 1 100<br>
        $ds9 -contour levels "1 10 100 1000"<br>
        $ds9 -contour open<br>
        $ds9 -contour close<br>
      </tt>
      <p><b><a name="crop"></a>crop</b> </p>
      <p>Set current image display area. </p>
      <tt> Syntax: <br>
        -crop [&lt;x&gt; &lt;y&gt; &lt;width&gt; &lt;height&gt;
[&lt;coordsys&gt;][&lt;skyframe&gt;][&lt;skyformat&gt;][degrees|arcmin|arcsec]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock &lt;coordsys&gt;|none]</tt><tt>
        <br>
        &nbsp;<br>
        Example: <br>
        $ds9 foo.fits -crop 40 30 10 20 # set crop in physical coords<br>
        $ds9 foo.fits -crop +104:51:06.915 +68:33:40.761&nbsp; 28.144405
        22.000204 wcs galactic arcsec<br>
        $ds9 foo.fits -crop match wcs<br>
        $ds9 foo.fits -crop lock wcs<br>
      </tt>
      <p><b> <a name="crosshair"></a>crosshair</b></p>
      <p>Controls the current position of the crosshair in the current
        frame. DS9 is placed in crosshair mode when the crosshair is
        set. </p>
      <tt> Syntax: <br>
        -crosshair [&lt;x&gt; &lt;h&gt; &lt;coordsys&gt;
        [&lt;skyframe&gt;][&lt;skyformat&gt;]]<br>
        &nbsp;</tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;















































































































        [match &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock
        &lt;coordsys&gt;|none]</tt><br>
      <tt> &nbsp;<br>
        Example: <br>
        $ds9 -crosshair 100 100 physical # set crosshair in physical <br>
        $ds9 -crosshair 345 58.8 wcs fk5 # set crosshair in wcs coords <br>
        $ds9 -crosshair 23:01:00 +58:52:51 wcs fk5<br>
        $ds9 -crosshair match<br>
        $ds9 -crosshair lock wcs<br>
      </tt>
      <p><b><a name="cube"></a>cube<br>
        </b></p>
      <p>Controls FITS cube. </p>
      <tt> Syntax: <br>
        -cube [play|stop|next|prev|first|last]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;slice&gt;
        [&lt;coordsys&gt;][&lt;axis&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [interval &lt;numeric&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [axis &lt;axis&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock &lt;coordsys&gt;|none]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [order 123|132|213|231|312|321]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes lock [yes|no]]<br>
      </tt> <tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -cube play<br>
        $ds9 -cube last<br>
        $ds9 -cube 3<br>
        $ds9 -cube 4.5 wcs 3<br>
        $ds9 -cube interval 2<br>
        $ds9 -cube axis 3<br>
        $ds9 -cube match wcs<br>
        $ds9 -cube lock wcs<br>
        $ds9 -cube order 123<br>
        $ds9 -cube axes lock yes<br>
        $ds9 -cube open<br>
        $ds9 -cube close</tt><br>
      <p><b> <a name="cursor"></a>cursor</b></p>
      <p>Move mouse pointer or crosshair in image pixels in the current
        frame. Note, this will move selected Regions also. </p>
      <tt> Syntax: <br>
        -cursor [&lt;x&gt; &lt;h&gt;] <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -cursor 10 10</tt><tt><br>
      </tt>
      <p><b><a name="dsssao"></a>dsssao<br>
          dss<br>
        </b></p>
      <p>Support for Digital Sky Survey at SAO.</p>
      <tt> Syntax: <br>
        -dsssao []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord &lt;ra&gt;
        &lt;dec&gt; degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update
        frame|crosshair]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -dsssao <br>
        $ds9 -dsssao m31 <br>
        $ds9 -dsssao name m31 <br>
        $ds9 -dsssao coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -dsssao size 60 60 arcmin<br>
        $ds9 -dsssao save yes<br>
        $ds9 -dsssao frame current<br>
        $ds9 -dsssao update frame<br>
        $ds9 -dsssao open<br>
        $ds9 -dsssao close<br>
      </tt>
      <p><b><a name="dsseso"></a>dsseso </b></p>
      <p>Support for Digital Sky Survey at ESO.</p>
      <tt> Syntax:<br>
        -dsseso []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord &lt;ra&gt;
        &lt;dec&gt; degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update
        frame|crosshair]<br>
        &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; [survey
        DSS1|DSS2-red|DSS2-blue|DSS2-infrared]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -dsseso <br>
        $ds9 -dsseso m31 <br>
        $ds9 -dsseso name m31 <br>
        $ds9 -dsseso coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -dsseso size 60 60 arcmin<br>
        $ds9 -dsseso save yes<br>
        $ds9 -dsseso frame current<br>
        $ds9 -dsseso update frame <br>
        $ds9 -dsseso survey DSS2-red<br>
        $ds9 -dsseso open<br>
      </tt><tt>$ds9 -dsseso close</tt><br>
      <p><b><a name="dssstsci"></a>dssstsci </b></p>
      <p>Support for Digital Sky Survey at STSCI.</p>
      <tt> Syntax:<br>
        -dssstsci []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name
        &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord
        &lt;ra&gt; &lt;dec&gt; degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size
        &lt;width&gt; &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save
        yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame
        new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update
        frame|crosshair]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [survey
        poss2ukstu_red|poss2ukstu_ir|poss2ukstu_blue] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [survey
        poss1_blue|poss1_red]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [survey
        all|quickv|phase2_gsc2|phase2_gsc1]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -dssstsci <br>
        $ds9 -dssstsci m31 <br>
        $ds9 -dssstsci name m31 <br>
        $ds9 -dssstsci coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -dssstsci size 60 60 arcmin<br>
        $ds9 -dssstsci save yes<br>
        $ds9 -dssstsci frame current<br>
        $ds9 -dssstsci update frame <br>
        $ds9 -dssstsci survey all<br>
        $ds9 -dssstsci open<br>
        $ds9 -dssstsci close</tt><br>
      <p><b> <a name="envi"></a>envi</b></p>
      <p>Load an ENVI header and file. Optional parameter: array endian.<br>
      </p>
      <tt> Syntax: <br>
        -envi &lt;header&gt; [&lt;filename&gt;]<br>
        &nbsp;<br>
        Example:<br>
      </tt><tt><tt><tt><tt>$ds9 -envi foo.hdr</tt></tt><tt><tt><tt><tt><tt><tt><br>
                    </tt></tt></tt></tt></tt></tt> <b> </b>$ds9 -envi
          foo.hdr foo.bsq</tt></tt><tt><tt><tt><tt><tt><tt><br>
                </tt></tt></tt></tt></tt></tt>
      <p><b> <a name="exit"></a>exit<br>
          quit</b></p>
      <p>Quits DS9. </p>
      <tt> Syntax: <br>
        -exit <br>
        -quit <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -exit<br>
      </tt>
      <p><b> <a name="export"></a>export<br>
        </b></p>
      <p>Export loaded image data of current frame in specified image
        format, at native resolution, using current colormap and
        contrast/bias settings. NOTE: not scaling, rotation, or
        translation is applied. If no format specified, the file name
        extension is used to determine the output format. Optional
        parameters: jpeg quality (1-100) and tiff compression method.<br>
      </p>
      <tt> Syntax: <br>
        -export [array|nrrd|envi|gif|tiff|jpeg|png] &lt;filename&gt;</tt><tt><br>
      </tt><tt><tt>-export array &lt;filename&gt;</tt><tt> </tt><tt>[big|little</tt><tt>|native]<br>
        </tt>-export nrrd &lt;filename&gt; </tt><tt>[big|little</tt><tt>|native]</tt><br>
      <tt>-export envi &lt;header&gt; [&lt;filename&gt;] </tt><tt>[big|little</tt><tt>|native]</tt><tt>
      </tt><tt><br>
      </tt><tt>-export &lt;filename&gt;</tt><tt>.jpeg [1-100]<br>
      </tt><tt>-export &lt;filename&gt;</tt><tt>.tiff
        [none|jpeg|packbits|deflate]</tt><br>
      <tt> &nbsp;<br>
        Example:<br>
        $ds9 -export array foo.arr little<br>
        $ds9 -export nrrd foo.nrrd little<br>
        $ds9 -export envi foo.hdr little<br>
      </tt><tt><tt>$ds9 -export envi foo.hdr foo.bsq little<br>
        </tt>$ds9 -export tiff foo.tiff jpeg<br>
        $ds9 -export jpeg foo.jpeg 75<br>
        $ds9 -export png foo.png</tt><br>
      <p><b><a name="fifo"></a>fifo</b></p>
      <p>Set the name of the IRAF input and output fifos. The default is
        /dev/imt1. These fifos are used by IRAF to communicate with DS9.
      </p>
      <tt> Syntax: <br>
        -fifo name <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -fifo /dev/imt1 </tt>
      <p><b> <a name="fifo_only"></a>fifo_only</b></p>
      <p>Only use IRAF input and output fifos. Same as -port 0 -unix
        none. </p>
      <tt> Syntax: <br>
        -fifo_only <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -fifo_only<br>
      </tt>
      <p><b> <a name="fits"></a>fits</b></p>
      <p>Load a FITS image into the current frame.<br>
      </p>
      <tt> Syntax: <br>
        -fits </tt><tt><tt>&lt;filename&gt;</tt></tt><tt><br>
        &nbsp;<br>
        Example: <br>
      </tt><tt>$ds9 -fits foo.fits<br>
        $ds9 -fits bar.fits[bin=detx,dety]<br>
        $cat foo.fits | ds9 -fits -<br>
        $cat bar.fits | ds9 -fits -[bin=detx,dety]</tt><tt><br>
      </tt>
      <p><b><a name="frame"></a>frame</b></p>
      <p>Controls frame functions. Frames may be created, deleted,
        reset, and centered. While return the current frame number. If
        you goto a frame that does not exists, it will be created. If
        the frame is hidden, it will be shown. The 'frameno' option is
        available for backward compatibility. </p>
      <tt> Syntax: <br>
        -frame [center [#|all]]<br>
        &nbsp; &nbsp; &nbsp;&nbsp; [clear [#|all]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; [new [rgb]]<br>
        &nbsp; &nbsp; &nbsp; &nbsp;[delete [#|all]] <br>
        &nbsp; &nbsp; &nbsp; &nbsp;[reset [#|all]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; &nbsp;[refresh [#|all]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;[hide [#|all]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; &nbsp;[show [#|all]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [move first]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [move back]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [move forward]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [move last]<br>
        &nbsp; &nbsp; &nbsp; &nbsp;[first]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; &nbsp;[prev]<br>
        &nbsp; &nbsp; &nbsp; &nbsp;[next]<br>
        &nbsp; &nbsp; &nbsp; &nbsp;[last]<br>
        &nbsp; &nbsp; &nbsp; &nbsp;[frameno #]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; &nbsp;[#]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock
        &lt;coordsys&gt;|none]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -frame center # center current frame<br>
        $ds9 -frame center 1 # center 'Frame1' <br>
        $ds9 -frame center all # center all frames <br>
        $ds9 -frame clear # clear current frame<br>
        $ds9 -frame new # create new frame <br>
        $ds9 -frame new rgb # create new rgb frame<br>
        $ds9 -frame delete # delete current frame <br>
        $ds9 -frame reset # reset current frame <br>
        $ds9 -frame refresh # refresh current frame <br>
        $ds9 -frame hide # hide current frame <br>
        $ds9 -frame show 1 # show frame 'Frame1'<br>
        $ds9 -frame move first # move frame to first in order<br>
        $ds9 -frame move back # move frame back in order<br>
        $ds9 -frame move forward # move frame forward in order<br>
        $ds9 -frame move last # move frame to last in order<br>
        $ds9 -frame first # goto first frame <br>
        $ds9 -frame prev # goto prev frame <br>
        $ds9 -frame next # goto next frame<br>
        $ds9 -frame last # goto last frame<br>
        $ds9 -frame frameno 4 # goto frame 'Frame4', create if needed<br>
        $ds9 -frame 3 # goto frame 'Frame3', create if needed<br>
        $ds9 -frame lock wcs</tt><br>
      <p><b> <a name="gif"></a>gif</b></p>
      <p>Import gif file. </p>
      <tt> Syntax: <br>
        -gif &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -gif foo.gif<br>
        $cat foo.gif | ds9 -gif -<br>
      </tt>
      <p><b> <a name="geometry"></a>geometry</b></p>
      <p>Define the initial window geometry. This includes all of the
        ds9 window, not just the image space. see X(1). </p>
      <tt> Syntax: <br>
        -geometry value <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -geometry 640x480 </tt>
      <p><b> <a name="green"></a>green</b></p>
      <p>For RGB frames, sets the current color channel to green.</p>
      <tt> Syntax: <br>
        -green<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -green foo.fits </tt>
      <p><b> <a name="grid"></a>grid</b></p>
      <p>Controls coordinate grid. For grid numeric format syntax,&nbsp;
        click <a href="grid.html#Format">here</a>.</p>
      <tt> Syntax: <br>
        -grid []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [type analysis|publication] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [system &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [sky &lt;skyframe&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [skyformat &lt;skyformat&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid width &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid style 0|1]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid gap1 &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid gap2 &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes width &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes style 0|1]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes type interior|exterior]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes origin
        lll|llu|lul|luu|ull|ulu|uul|uuu]</tt><br>
      <tt> &nbsp;&nbsp;&nbsp; &nbsp; [format1 &lt;format&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [format2 &lt;format&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [tickmarks yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [tickmarks color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [tickmarks width &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [tickmarks style 0|1]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [border yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [border color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [border width &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [border style 0|1]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics font
        times|helvetica|courier]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics fontsize &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics fontweight normal|bold]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics fontslant roman|italic]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics gap1 &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics gap2 &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics type interior|exterior]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [numerics vertical yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title text &lt;text&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title def yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title gap &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title font
        times|helvetica|courier]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title fontsize &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title fontweight normal|bold]<br>
        &nbsp; &nbsp;&nbsp;&nbsp; [title fontslant roman|italic]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [title color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels text1 &lt;text&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels def1 yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels gap1 &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels text2 &lt;text&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels def2 yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels gap2 &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels font
        times|helvetica|courier]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels fontsize &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels fontweight normal|bold]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels fontslant roman|italic]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [labels color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [reset]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [load &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -grid <br>
        $ds9 -grid yes<br>
        $ds9 -grid type analysis <br>
        $ds9 -grid system wcs <br>
        $ds9 -grid sky fk5 <br>
        $ds9 -grid skyformat degrees<br>
        $ds9 -grid grid yes<br>
        $ds9 -grid grid color red<br>
        $ds9 -grid grid width 2<br>
        $ds9 -grid grid style 1<br>
        $ds9 -grid grid gap1 10<br>
        $ds9 -grid grid gap2 10<br>
        $ds9 -grid axes yes<br>
        $ds9 -grid axes color red<br>
        $ds9 -grid axes width 2<br>
        $ds9 -grid axes style 1<br>
        $ds9 -grid axes type exterior<br>
        $ds9 -grid axes origin lll<br>
        $ds9 -grid format1 d.2<br>
        $ds9 -grid format2 d.2<br>
        $ds9 -grid tickmarks yes<br>
        $ds9 -grid tickmarks color red<br>
        $ds9 -grid tickmarks width 2<br>
        $ds9 -grid tickmarks style 1<br>
        $ds9 -grid border yes<br>
        $ds9 -grid border color red<br>
        $ds9 -grid border width 2<br>
        $ds9 -grid border style 1<br>
        $ds9 -grid numerics yes<br>
        $ds9 -grid numerics font courier<br>
        $ds9 -grid numerics fontsize 12<br>
        $ds9 -grid numerics fontweight bold<br>
        $ds9 -grid numerics fontslant italic<br>
        $ds9 -grid numerics color red<br>
        $ds9 -grid numerics gap1 10<br>
        $ds9 -grid numerics gap2 10<br>
        $ds9 -grid numerics type exterior<br>
        $ds9 -grid numerics vertical yes<br>
        $ds9 -grid title yes<br>
        $ds9 -grid title text {Hello World}<br>
        $ds9 -grid title def yes<br>
        $ds9 -grid title gap 10<br>
        $ds9 -grid title font courier<br>
        $ds9 -grid title fontsize 12<br>
        $ds9 -grid title fontweight bold<br>
        $ds9 -grid title fontslant italic<br>
        $ds9 -grid title color red<br>
        $ds9 -grid labels yes<br>
        $ds9 -grid labels text1 {Hello World}<br>
        $ds9 -grid labels def1 yes<br>
        $ds9 -grid labels gap1 10<br>
        $ds9 -grid labels text2 {Hello World}<br>
        $ds9 -grid labels def2 yes<br>
        $ds9 -grid labels gap2 10<br>
        $ds9 -grid labels font courier<br>
        $ds9 -grid labels fontsize 12<br>
        $ds9 -grid labels fontweight bold<br>
        $ds9 -grid labels fontslant italic<br>
        $ds9 -grid labels color red<br>
        $ds9 -grid reset<br>
        $ds9 -grid load foo.grd <br>
        $ds9 -grid save foo.grd <br>
        $ds9 -grid open<br>
        $ds9 -grid close<br>
      </tt>
      <p><b> <a name="header"></a>header</b></p>
      <p>Display current fits header dialog. Optional extension number
        maybe specified.</p>
      <tt> Syntax: <br>
        -header [&lt;ext&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [close [&lt;ext&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save [&lt;ext&gt;]
        &lt;filename&gt;]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -header <br>
        $ds9 -header 2<br>
        $ds9 -header close<br>
        $ds9 -header save 1 foo.txt<br>
      </tt>
      <p><b> <a name="height"></a>height</b></p>
      <p>Set the height of the image display window. Use the <a
          href="command.html#geometry">geometry</a> command to set the
        overall width and height of the ds9 window.</p>
      <tt> Syntax: <br>
        -height [&lt;value&gt;]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -height 512<br>
      </tt>
      <p><b> <a name="help"></a>help</b></p>
      <p>Display help information. To maintain backward compatibility,
        -help will display a brief help message and exit. --help will
        display all command line options within the built-in help
        facility.</p>
      <tt> Syntax: <br>
        -help # Display brief help message and exit.<br>
        --help # Display command line options within help facility.<br>
        -? # Display command line options within help facility.<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -help # Display brief help message and exit.<br>
        $ds9 --help # Display command line options within help facility<br>
        $ds9 -? # Display command line options within help facility.<br>
      </tt>
      <p><b> <a name="histequ"></a>histequ</b></p>
      <p>Select histogram equalization scale function for the current
        frame. </p>
      <tt> Syntax: <br>
        -histequ<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -histequ<br>
      </tt>
      <p><b> <a name="iconify"></a>iconify</b></p>
      <p>Toggles iconification. </p>
      <tt> Syntax: <br>
        -iconify []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no] <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -iconify<br>
        $ds9 -iconify yes</tt><br>
      <p><b> <a name="invert"></a>invert</b></p>
      <p>Invert Colormap. </p>
      <tt> Syntax: <br>
        -invert <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -invert<br>
      </tt>
      <p><b><a name="iis"></a>iis</b></p>
      <p>Set IIS Filename. Optional mosaic number maybe supplied.</p>
      <tt> Syntax: <br>
        -iis [filename &lt;filename&gt; [#]]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -iis filename foo.fits<br>
        $ds9 -iis filename bar.fits 4</tt><br>
      <p><b> <a name="jpeg"></a>jpeg</b></p>
      <p>Load JPEG image into current frame.</p>
      <tt> Syntax:<br>
        -jpeg &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
      </tt><tt>$ds9 -jpeg foo.jpeg</tt><br>
      <tt>$cat foo.jpeg | ds9 -jpeg -</tt><br>
      <p><b> <a name="language"></a>language</b></p>
      <p>Select current language. </p>
      <tt> Syntax: <br>
        -language [locale|da|de|es|en|fr|ja|pt]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -language fr<br>
      </tt>
      <p><b> <a name="linear"></a>linear</b></p>
      <p>Select linear scale function for the current frame. </p>
      <tt> Syntax: <br>
        -linear <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -linear </tt>
      <p><b> <a name="lock"></a>lock</b></p>
      <p>Lock all other frames to the current frame. </p>
      <tt> Syntax: <br>
      </tt><tt>-lock</tt><tt> </tt><tt>[frame &lt;coordsys&gt;|none]<br>
        &nbsp;&nbsp; &nbsp;&nbsp; </tt><tt>[crosshair
        &lt;coordsys&gt;|none] </tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp; [crop &lt;coordsys&gt;|none]</tt><br>
      <tt> &nbsp;&nbsp;&nbsp; &nbsp; [slice &lt;coordsys&gt;|none]</tt><br>
      <tt> </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp; [bin [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes [yes|no]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [scale [yes|no]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [scalelimits [yes|no]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [colorbar [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [block [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [smooth [yes|no]]</tt><br>
      <tt><br>
      </tt><tt> </tt><tt>Example: </tt><tt><br>
        $ds9 -lock frame wcs</tt><tt><br>
      </tt><tt>$ds9 -lock crosshair wcs</tt><tt><br>
      </tt><tt>$ds9 -lock crop wcs</tt><br>
      <tt>$ds9 -lock slice wcs</tt><br>
      <tt>$ds9 -lock bin yes<br>
        $ds9 -lock axes yes<br>
      </tt><tt>$ds9 -lock scale yes<br>
        $ds9 -lock scalelimits yes<br>
      </tt><tt>$ds9 -lock colorbar yes</tt><tt><br>
        $ds9 -lock block yes<br>
        $ds9 -lock smooth yes<br>
      </tt>
      <p><b> <a name="log"></a>log</b></p>
      <p>Select log scale function for the current frame. <br>
      </p>
      <tt> Syntax: <br>
        -log <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -log </tt>
      <p><b> <a name="lower"></a>lower</b></p>
      <p>Lower in the window stacking order. </p>
      <tt> Syntax: <br>
        -lower <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -lower<br>
      </tt>
      <p><b> <a name="magnifier"></a>magnifier</b></p>
      <p>Controls the magnifier settings. </p>
      <tt> Syntax: <br>
        magnifier [color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [zoom
        &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [cursor
        yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [region
        yes|no]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -magnifier color yellow<br>
        $ds9 -magnifier zoom 2<br>
        $ds9 -magnifier cursor no<br>
        $ds9 -magnifier region no<br>
      </tt>
      <p><b> <a name="mask"></a>mask<br>
          nomask<br>
        </b></p>
      <p>Controls mask parameters. </p>
      <tt> Syntax: <br>
        -mask [color &lt;color&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [mark 1|0]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [transparency &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [clear]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        -nomask<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -mask color red<br>
        $ds9 -mask mark 0<br>
        $ds9 -mask transparency 50<br>
        $ds9 -mask clear<br>
        $ds9 -mask open<br>
        $ds9 -mask close<br>
        $ds9 -nomask<br>
      </tt>
      <p><b> <a name="match"></a>match</b></p>
      <p>Match all other frames to the current frame. </p>
      <tt> Syntax: <br>
      </tt><tt>-match </tt><tt>[frame &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[crosshair
        &lt;coordsys&gt;] </tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [crop
        &lt;coordsys&gt;]</tt><br>
      <tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [slice &lt;coordsys&gt;]</tt><br>
      <tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [bin]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [axes]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [scale]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [scalelimits]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [colorbar]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [block]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [smooth]<br>
      </tt><tt>&nbsp;<br>
        Example: <br>
      </tt><tt>$ds9 -match frame wcs <br>
      </tt><tt>$ds9 -match crosshair wcs<br>
      </tt><tt>$ds9 -match crop wcs</tt><br>
      <tt> $ds9 -match slice wcs</tt> <br>
      <tt>$ds9 -match bin<br>
        $ds9 -match axes<br>
        $ds9 -match scale<br>
        $ds9 -match scalelimits<br>
        $ds9 -match colorbar<br>
        $ds9 -match block<br>
        $ds9 -match smooth<br>
        <br>
      </tt><b><a name="mecube"></a>mecube</b>
      <p>Load FITS multiple extension file as data cube.<br>
      </p>
      <tt> Syntax:<br>
        mecube &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -mecube foo.fits</tt><tt><tt><br>
        </tt>$cat foo.fits | ds9 -mecube -</tt><br>
      <p><b> <a name="minmax"></a>minmax</b></p>
      <p>This is how DS9 determines&nbsp; the min and max data values
        from the data. <tt>SCAN</tt> will scan all data.</p>
      <tt> Syntax: <br>
        -minmax [scan|sample|datamin|irafmin] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [mode
        scan|sample|datamin|irafmin]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [interval #]<br>
        &nbsp; <br>
        Example: <br>
        $ds9 -minmax scan <br>
        $ds9 -minmax mode scan<br>
        $ds9 -minmax interval 100<br>
      </tt>
      <p><b> <a name="mode"></a>mode</b></p>
      <p>Select the current mode. </p>
      <tt> Syntax: <br>
        -mode
        [none|region|crosshair|colorbar|pan|zoom|rotate|catalog|examine]
        <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -mode crosshair</tt><br>
      <p><b> <a name="mosaic"></a>mosaic</b></p>
      <p>Load FITS mosaic segment into current frame.</p>
      <tt> Syntax:<br>
        -mosaic [wcs|wcsa...wcsz|iraf] &lt;filename&gt;<br>
        &nbsp;<br>
        Example: </tt><tt><br>
        $ds9 -mosaic foo.fits</tt><br>
      <tt><tt>$ds9 -mosaic wcs foo.fits</tt></tt><tt><tt><tt><br>
          </tt></tt>$cat foo.fits | ds9 -mosaic -</tt> <br>
      <tt><tt>$cat foo.fits | ds9 -mosaic wcs -</tt></tt><tt><br>
      </tt>
      <p><b> <a name="mosaicimage"></a>mosaicimage</b></p>
      <p>Load FITS mosaic image into current frame.</p>
      <tt> Syntax:<br>
        -mosaicimage [wcs|wcsa...wcsz|iraf|wfpc2] &lt;filename&gt;<br>
        &nbsp;<br>
        Example: </tt><tt><br>
        $ds9 -mosaicimage foo.fits</tt><br>
      <tt><tt>$ds9 -mosaicimage wcs foo.fits</tt></tt><tt><tt><tt><br>
          </tt></tt>$cat foo.fits | ds9 -mosaicimage</tt><br>
      <tt><tt>$cat foo.fits | ds9 -mosaiimage wcs</tt></tt><tt><br>
      </tt>
      <p><b><a name="movie"></a>movie<br>
          savempeg<br>
        </b></p>
      <p>Create mpeg1 movie from snap shots of the DS9 window. A <tt>slice</tt>
        movie cycles though all slices of a cube. A <tt>frame</tt>
        movie cycles through all active frames. A <tt>3d</tt> movie
        cycles through specified viewing angles. The default is <tt>frame</tt>.
        Optional parameters for <tt>3d</tt>: number of frames, azimuth
        from/to, elevation from/to, slice from/to, oscillate/repeat
        times.<br>
      </p>
      <tt> Syntax:<br>
        -movie [slice|frame|3d] &lt;filename&gt;<br>
        -movie 3d &lt;filename&gt;
        [number|azfrom|azto|elfrom|elto|slfrom|slto|oscillate|repeat
        &lt;#&gt;]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -movie slice ds9.mpg<br>
        $ds9 -movie 3d ds9.mpg number 10 azfrom -60 azto 60 oscillate 1</tt><br>
      <p><b> <a name="msg"></a>msg</b></p>
      <p>Specify a directory of translation tables to be loaded.</p>
      <tt> Syntax: <br>
        -msg &lt;directory&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -msg $HOME/msgs</tt><br>
      <p><b> <a name="multiframe"></a>multiframe</b></p>
      <p>Load FITS multiple extension file as multiple images.<br>
      </p>
      <tt> Syntax:<br>
        multiframe &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -multiframe foo.fits</tt><tt><tt><br>
        </tt>$cat foo.fits | ds9 -multiframe -</tt><tt><br>
      </tt>
      <p><b><a name="nameserver"></a>nameserver</b></p>
      <p>Support Name Server functions. Coordinates are in fk5. </p>
      <tt> Syntax: <br>
        -nameserver [&lt;object&gt;]<br>
        &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [name &lt;object&gt;]<br>
        &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [server
        ned-sao|ned-eso|simbad-sao|simbad-eso] <br>
        &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [skyformat
        degrees|sexagesimal]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


















































































































        [pan]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


















































































































        [crosshair]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


















































































































        [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -nameserver m31<br>
        $ds9 -nameserver name m31 <br>
        $ds9 -nameserver server ned-sao <br>
        $ds9 -nameserver skyformat sexagesimal<br>
        $ds9 -nameserver pan<br>
        $ds9 -nameserver crosshair<br>
        $ds9 -nameserver open<br>
        $ds9 -nameserver close<br>
      </tt>
      <p><b> <a name="nan"></a>nan</b></p>
      <p>Set image not-a-number color. </p>
      <tt> Syntax: <br>
        -nan &lt;color&gt;<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -nan red</tt><br>
      <p><b> <a name="nrrd"></a>nrrd</b></p>
      <p>Load an NRRD (Nearly Raw Raster Data) file.<br>
      </p>
      <tt> Syntax: <br>
        -nrrd &lt;filename&gt;<br>
        &nbsp;<br>
        Example:<br>
      </tt><tt><tt>$ds9 -nrrd foo.nrrd</tt></tt><br>
      <tt>$cat foo.nrrd | xpaset ds9 -nrrd</tt> - <tt><br>
      </tt>
      <p><b> <a name="nvss"></a>nvss</b></p>
      <p>Support for NRAO VLA Sky Survey.</p>
      <tt> Syntax: <br>
        -nvss []<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord &lt;ra&gt; &lt;dec&gt;
        degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update frame|crosshair]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -nvss<br>
        $ds9 -nvss m31 <br>
        $ds9 -nvss name m31 <br>
        $ds9 -nvss coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -nvss size 60 60 arcmin<br>
        $ds9 -nvss save yes<br>
        $ds9 -nvss frame current<br>
        $ds9 -nvss update frame<br>
        $ds9 -nvss open<br>
        $ds9 -nvess close<br>
      </tt>
      <p><b><a name="orient"></a>orient</b></p>
      <p>Controls the orientation of the current frame. </p>
      <tt> Syntax: <br>
        -orient [none|x|y|xy] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -orient xy<br>
        $ds9 -orient open<br>
        $ds9 -orient close<br>
      </tt>
      <p><b> <a name="pagesetup"></a>pagesetup</b></p>
      <p>Controls Page Setup options.<br>
      </p>
      <tt> Syntax: <br>
        -pagesetup [orient portrait|landscape] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [scale &lt;numberic&gt;]</tt><br>
      <tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        [size letter|legal|tabloid|poster|a4]</tt><br>
      <tt> &nbsp;<br>
        Example: <br>
        $ds9 -pagesetup orient portrait <br>
        $ds9 -pagesetup scale 50<br>
        $ds9 -pagesetup size poster</tt><br>
      <p><b> <a name="pan"></a>pan</b></p>
      <p>Controls the current image cursor location for the current
        frame. </p>
      <tt> Syntax: <br>
        -pan [&lt;x&gt; &lt;h&gt; &lt;coordsys&gt;
        [&lt;skyframe&gt;][&lt;skyformat&gt;] # relative<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [to &lt;x&gt; &lt;h&gt;
        &lt;coordsys&gt; [&lt;skyframe&gt;][&lt;skyformat&gt;] #
        absolute<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -pan 200 200 image</tt><tt><tt> # pan relative </tt> <br>
        $ds9 -pan to 400 400 physical</tt><tt><tt> # pan to physical
          coords</tt> <br>
        $ds9 -pan to 13:29:55 47:11:50 wcs fk</tt><tt><tt> # pan to wcs
          coords</tt><br>
        $ds9 -pan open<br>
        $ds9 -pan close</tt><br>
      <p><b><a name="pixeltable"></a>pixeltable</b></p>
      <p>Display/Hide the pixel table. </p>
      <tt> Syntax: <br>
        -pixeltable []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


















































































































        [yes|open]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
        [no|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -pixeltable<br>
        $ds9 -pixeltable yes<br>
        $ds9 -pixeltable open<br>
        $ds9 -pixeltable close<br>
      </tt>
      <p><b> <a name="plot"></a>plot</b></p>
      <br>
      <p>Display and configure data plots. All plot commands take an
        optional second command, the plot name. If no plot name is
        specified, the last plot created is assumed. Plot data is
        assumed to be a pair of coordinates, with optional error values.
        The follow are valid data descriptions:</p>
      <blockquote>xy &nbsp;&nbsp; &nbsp; &nbsp; x and y coordinates<br>
        xyex&nbsp;&nbsp;&nbsp; &nbsp; x,y coordinates with x errors<br>
        xyey&nbsp;&nbsp;&nbsp; &nbsp; x,y coordinates with y errors<br>
        xyexey&nbsp;&nbsp;&nbsp; x,y coordinates with&nbsp; x and y
        errors<br>
      </blockquote>
      <p>To create a new plot, use the plot new command.</p>
      <tt> Syntax: <br>
        # create new empty plot window<br>
        -plot<br>
        -plot [bar|scatter]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [new [name &lt;plotname&gt;]
        [line|bar|scatter]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [new [name &lt;plotname&gt;]
        [line|bar|scatter] &lt;title&gt; &lt;xaxis label&gt; &lt;yaxis
        label&gt; </tt><tt>xy|xyex|xyey|xyexey</tt><tt>]<br>
        <br>
      </tt><tt><tt>-plot [&lt;plotname&gt;] load &lt;filename&gt;
          [xy|xyex|xyey|xyexey]<br>
          &nbsp;&nbsp;&nbsp; &nbsp; [&lt;plotname&gt;] save
          &lt;filename&gt;<br>
        </tt>&nbsp;&nbsp; &nbsp;&nbsp; [&lt;plotname&gt;] clear<br>
      </tt><tt><tt><tt><tt><tt><tt>&nbsp; &nbsp; &nbsp; </tt>[&lt;plotname&gt;]














































                duplicate<br>
              </tt></tt></tt></tt></tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;














































                            &nbsp;&nbsp; </tt>[&lt;plotname&gt;] stats<br>
                        </tt></tt>&nbsp;&nbsp;&nbsp; &nbsp; </tt>[&lt;plotname&gt;]














































                    list<br>
                    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </tt></tt></tt></tt></tt></tt></tt><tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                loadconfig &lt;filename&gt;<br>
                &nbsp; &nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] saveconfig
                &lt;filename&gt;<br>
              </tt></tt></tt></tt></tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;
                &nbsp;&nbsp; [&lt;plotname&gt;] pagesetup orient
                [portrait|landscape]<br>
                &nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] pagesetup size
                [letter|legal|tabloid|poster|a4]</tt><br>
              <tt> </tt></tt></tt></tt></tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;














































                &nbsp;&nbsp; [&lt;plotname&gt;] print<br>
                &nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] print
                destination [printer|file] <br>
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] print
                command &lt;command&gt;<br>
                &nbsp; &nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] print
                filename &lt;filename&gt;<br>
                &nbsp;&nbsp; &nbsp;&nbsp; [&lt;plotname&gt;] print color
                [rgb|gray]<br>
              </tt>&nbsp; &nbsp; &nbsp; </tt>[&lt;plotname&gt;] close<br>
            <br>
          </tt></tt></tt><tt><tt><tt><tt><tt><tt><tt> -plot </tt>[&lt;plotname&gt;]













































                  mode [pointer|zoom]<br>
                  <br>
                </tt></tt></tt></tt></tt></tt><tt># configure graph<br>
        -plot [&lt;plotname&gt;] axis [x|y] grid [yes|no]<br>
        &nbsp; &nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] axis [x|y] log
        [yes|no]<br>
      </tt><tt>&nbsp;&nbsp; &nbsp;&nbsp; [&lt;plotname&gt;] axis [x|y]
        flip [yes|no]</tt><br>
      <tt><tt>&nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] axis [x|y] auto
          [yes|no]<br>
          &nbsp; &nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] axis [x|y] min
          &lt;value&gt;<br>
        </tt><tt><tt>&nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] axis [x|y]
            max &lt;value&gt;</tt><tt><br>
          </tt>&nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] axis [x|y] format
          &lt;string&gt;</tt><tt><br>
        </tt>&nbsp; &nbsp; &nbsp; </tt><tt><tt>[&lt;plotname&gt;]
          legend [yes|no]<br>
          &nbsp;&nbsp; &nbsp;&nbsp; [&lt;plotname&gt;] legend position
          [right|left|top|bottom]</tt><br>
      </tt><tt><tt>&nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] font
          [title|labels|numbers] font [times|helvetica|courier]<br>
          &nbsp; &nbsp; &nbsp; [&lt;plotname&gt;] font </tt></tt><tt><tt><tt><tt>[title|labels|numbers]</tt></tt>
          size &lt;value&gt;<br>
          &nbsp;&nbsp; &nbsp;&nbsp; [&lt;plotname&gt;] font </tt></tt><tt><tt><tt><tt>[title|labels|numbers]</tt></tt>
          weight [normal|bold]<br>
          &nbsp;&nbsp; &nbsp;&nbsp; [&lt;plotname&gt;] font </tt></tt><tt><tt><tt><tt>[title|labels|numbers]</tt></tt>
          slant [roman|italic]<br>
        </tt></tt><tt>&nbsp; &nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] title
        &lt;string&gt;</tt><br>
      <tt><tt>&nbsp; &nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] title [x|y]
          &lt;string&gt;</tt></tt><tt><tt><tt><br>
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;plotname&gt;] barmode
            [normal|stacked|aligned|overlap]<br>
            <br>
            # configure current dataset<br>
          </tt>-plot [&lt;plotname&gt;] show [yes|no]<br>
        </tt>&nbsp; &nbsp; &nbsp; </tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































              shape
              [circle|square|diamond|plus|splus|scross|triangle|arrow]</tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt>&nbsp; &nbsp;&nbsp;&nbsp; <tt> </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                      shape fill [yes|no]</tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp; &nbsp;&nbsp; <tt>
                        </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]
                              shape color &lt;value&gt;</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;














































                                                &nbsp; &nbsp; <tt> </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                      smooth
                                                      [step|linear|cubic|quadratic|catrom]</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;














































                                                          &nbsp;&nbsp; <tt>
                                                          </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          color
                                                          &lt;value&gt;</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;














































                                                          &nbsp; <tt> </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          width
                                                          &lt;value&gt;<br>
                                                          </tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;














































                                                          &nbsp;&nbsp;&nbsp;















































                                                          <tt> </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          dash [yes|no]</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;














































                                                          &nbsp;&nbsp; <tt>
                                                          </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          error [yes|no]</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;














































                                                          &nbsp; &nbsp;
                                                          <tt> </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          error color
                                                          &lt;value&gt;</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;














































                                                          &nbsp;&nbsp; <tt>
                                                          </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          error width
                                                          &lt;value&gt;</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
      <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;














































                                                          &nbsp; <tt> </tt></tt><tt><tt><tt><tt>[&lt;plotname&gt;]














































                                                          name
                                                          &lt;string&gt;</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><tt><tt><tt><tt><br>
              # select current dataset<br>
            </tt></tt></tt>-plot [&lt;plotname&gt;] select &lt;value&gt;<br>
        &nbsp; <br>
        Example: <br>
      </tt><tt><tt> </tt></tt><tt># create new empty plot window<br>
        $ds9 -plot<br>
        $ds9 -plot scatter<br>
        $ds9 -plot new<br>
        $ds9 -plot new bar<br>
        $ds9 -plot new name foo<br>
        $ds9 -plot new name foo scatter<br>
      </tt><tt><tt><br>
          $ds9 -plot load foo.dat xy # load new dataset with dimension
          xy<br>
          $ds9 -plot save bar.dat # save current dataset<br>
        </tt></tt><tt><tt>$ds9 -plot clear # clear all datasets<br>
          $ds9 -plot duplicate # duplicate current dataset<br>
          $ds9 -plot stats # display current dataset statistics<br>
          $ds9 -plot list # list current dataset<br>
        </tt></tt><tt><tt>$ds9 -plot loadconfig foo.plt # load plot
          configuration <br>
          $ds9 -plot saveconfig bar.plt # save current plot
          configuration<br>
        </tt></tt><tt><tt>$ds9 -plot pagesetup orient portrait<br>
          $ds9 -plot pagesetup size letter<br>
        </tt></tt><tt><tt>$ds9 -plot print<br>
          $ds9 -plot print destination file<br>
          $ds9 -plot print command "lp"<br>
          $ds9 -plot print filename "foo.ps"<br>
          $ds9 -plot print color rgb<br>
        </tt>$ds9 -plot close # close current plot<br>
      </tt><tt><tt><br>
          $ds9 -plot mode pointer</tt><br>
      </tt><tt><br>
        # configure plot<br>
      </tt><tt>$ds9 -plot axis x grid yes<br>
        $ds9 -plot axis x log yes</tt><br>
      <tt>$ds9 -plot axis x flip yes</tt><tt><br>
      </tt><tt><tt>$ds9 -plot axis x auto no<br>
          $ds9 -plot axis x min 0<br>
          $ds9 -plot axis x max 100<br>
        </tt><tt><tt>$ds9 -plot axis x format {%f}<br>
          </tt></tt>$ds9 -plot legend yes # show legend<br>
      </tt><tt>$ds9 -plot legend position left</tt><tt><tt><tt><tt><br>
            </tt></tt>$ds9 -plot font numbers font times<br>
          $ds9 -plot font numbers size 12<br>
          $ds9 -plot font numbers weight bold<br>
          $ds9 -plot font numbers slant italic<br>
        </tt></tt><tt>$ds9 -plot title {The Title}<br>
        $ds9 -plot title x {X Axis}<br>
        $ds9 -plot barmode aligned<br>
        <br>
        # configure current dataset<br>
      </tt><tt>$ds9 -plot show yes<br>
        $ds9 -plot shape circle<br>
      </tt><tt><tt>$ds9 -plot shape fill no<br>
        </tt></tt><tt><tt><tt>$ds9 -plot shape color cyan<br>
          </tt></tt></tt><tt><tt>$ds9 -plot smooth step<br>
        </tt>$ds9 -plot color red<br>
        $ds9 -plot width 2<br>
        $ds9 -plot dash yes<br>
        $ds9 -plot error yes<br>
        $ds9 -plot error color red</tt><br>
      <tt>$ds9 -plot error width 2</tt><br>
      <tt>$ds9 -plot name {My Data}</tt><br>
      <tt><br>
        # select current dataset<br>
        $ds9 -plot select 2</tt>
      <p><b><b><a name="png"></a></b>png</b></p>
      <p>Load PNG image into current frame.<br>
      </p>
      <tt> Syntax:<br>
        -png &lt;filename&gt;<br>
        &nbsp;<br>
        Example: </tt><br>
      <tt>$ds9 png foo.png</tt><tt><tt><tt><br>
          </tt></tt>$cat foo.png | ds9 -png -</tt><tt><br>
      </tt>
      <p><b> <a name="port"></a>port</b></p>
      <p>Set the IRAF port number, used by IRAF to communicate with DS9.
        The default is 5137, the standard IRAF port used by <i>ximtool</i>.
      </p>
      <tt> Syntax: <br>
        -port number <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -port 5137 </tt>
      <p><b> <a name="port_only"></a>port_only<br>
          inet_only</b></p>
      <p>Only use the IRAF port number. This is the same as -fifo none
        -unix none. </p>
      <tt> Syntax: <br>
        -port_only <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -port_only<br>
      </tt>
      <p><b> <a name="pow"></a>pow</b></p>
      <p>Select power scale function for the current frame. </p>
      <tt> Syntax: <br>
        -pow <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -pow </tt>
      <p><b> <a name="prefs"></a>prefs</b></p>
      <p>Controls various preference settings. </p>
      <tt> Syntax: <br>
        -prefs [clear]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [irafalign yes|no]<br>
        &nbsp; <br>
        Example: <br>
        $ds9 -prefs clear<br>
        $ds9 -prefs irafalign yes<br>
      </tt>
      <p><b><a name="preserve"></a>preserve</b> </p>
      <p>Preserve the follow attributes while loading a new image. </p>
      <tt> Syntax: <br>
        preserve [pan yes|no]<br>
        &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; [regions yes|no]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -preserve pan yes<br>
        $ds9 -preserve regions yes<br>
      </tt>
      <p><b><a name="psprint"></a>psprint</b></p>
      <p>Invokes postscript printing. Please see <a
          href="file:///Users/joye/saods9/ds9/doc/ref/command.html#print">print</a>
        for further details.</p>
      <p><b><a name="print"></a>print</b></p>
      <p>Controls printing. Use print option to set printing options.<br>
      </p>
      <tt> Syntax: <br>
        -print [destination printer|file] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [command &lt;command&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [filename &lt;filename&gt;]
        <br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [color
        rgb|cmyk|gray] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [level 1|2] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [resolution
        53|72|75|150|300|600] <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -print <br>
        $ds9 -print destination file <br>
        $ds9 -print command 'gv -' <br>
        $ds9 -print filename foo.ps <br>
        $ds9 -print color cmyk <br>
        $ds9 -print level 2 <br>
        $ds9 -print resolution 75 </tt>
      <p><b> <a name="private"></a>private</b></p>
      <p>use private colormap, valid for pseudocolor 8 mode. </p>
      <tt> Syntax: <br>
        -private <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -private </tt>
      <p><b> <a name="raise"></a>raise</b></p>
      <p>Raise in the window stacking order. </p>
      <tt> Syntax: <br>
        -raise <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -raise<br>
      </tt>
      <p><b> <a name="regions"></a>regions</b></p>
      <p>Controls regions in the current frame. </p>
      <tt> Syntax: <br>
        -regions [&lt;filename&gt;]<br>
        &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [load [all]
        &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save
        &lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [list [close]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [epsilon
        &lt;integer&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [show yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [showtext yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [centroid]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [centroid auto
        yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [centroid
        radius &lt;value&gt;|iteration &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [getinfo]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [move front] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [move back]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [select all]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [select none]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [select invert]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [delete all]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [delete select]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [format
        ds9|xml|ciao|saotng|saoimage|pros|xy]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [system
        image|physical|wcs|wcsa...wcsz]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [sky
        fk4|fk5|icrs|galactic|ecliptic] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [skyformat
        degrees|sexagesimal]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [strip yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [shape
        &lt;shape&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [color
        &lt;color&gt;<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [width
        &lt;width&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
        [fixed|edit|rotate|delete yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
        [include|exclude|source|background]</tt><br>
      <tt> </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [delim
        [nl|&lt;char&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [command
        &lt;marker command&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [composite]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [dissolve]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [template
        &lt;filename&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [template
        &lt;filename&gt; at &lt;ra&gt; &lt;dec&gt; &lt;coordsys&gt;
        &lt;skyframe&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [savetemplate
        &lt;filename&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group new]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [group
        &lt;tag&gt; new]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [group
        &lt;tag&gt; update]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group
        &lt;tag&gt; select]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group
        &lt;tag&gt; color &lt;color&gt;] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        copy] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        delete] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        cut]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        font &lt;font&gt;] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        move &lt;int&gt; &lt;int&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        movefront] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        moveback] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [group &lt;tag&gt;
        property &lt;property&gt; yes|no] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [copy]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [cut]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [paste
        image|physical|wcs|wcsa...wcsz]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [undo]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -regions foo.reg <br>
        $ds9 -regions -format ciao bar.reg # load as ciao format<br>
        $ds9 -regions foo.fits # FITS regions files do not need a format
        specification<br>
        $ds9 -regions load foo.reg # load foo.reg into current frame<br>
        $ds9 -regions load all foo.reg # load foo.reg into all frames<br>
        $ds9 -regions load '*.reg'# expand *.reg and load into current
        frame<br>
        $ds9 -regions load all '*.reg' # expand *.reg and load into all
        frames<br>
        $ds9 -regions save foo.reg<br>
        $ds9 -regions list <br>
        $ds9 -regions list close<br>
        $ds9 -regions epsilon 5<br>
        $ds9 -regions show yes<br>
        $ds9 -regions showtext no<br>
        $ds9 -regions centroid<br>
        $ds9 -regions centroid auto yes<br>
        $ds9 -regions centroid radius 10<br>
        $ds9 -regions centroid iteration 20<br>
        $ds9 -regions getinfo<br>
        $ds9 -regions move back<br>
        $ds9 -regions move front<br>
        $ds9 -regions select all <br>
        $ds9 -regions select none<br>
        $ds9 -regions select invert<br>
        $ds9 -regions delete all<br>
        $ds9 -regions delete select<br>
        $ds9 -regions format ds9 <br>
        $ds9 -regions system wcs<br>
        $ds9 -regions sky fk5 <br>
        $ds9 -regions skyformat degrees <br>
        $ds9 -regions delim nl <br>
        $ds9 -regions strip yes<br>
        $ds9 -regions shape ellipse <br>
        $ds9 -regions color red <br>
        $ds9 -regions width 3<br>
      </tt><tt>$ds9 -regions edit yes<br>
        $ds9 -regions include<br>
      </tt><tt>$ds9 -regions command "circle 100 100 20 # color=red"<br>
        $ds9 -regions composite<br>
        $ds9 -regions dissolve<br>
        $ds9 -regions template foo.tpl<br>
        $ds9 -regions template foo.tpl at 13:29:55.92 +47:12:48.02 fk5<br>
        $ds9 -regions savetemplate foo.tpl<br>
        $ds9 -regions group new<br>
        $ds9 -regions group foo new<br>
        $ds9 -regions group foo update<br>
        $ds9 -regions group foo select<br>
        $ds9 -regions group foo color red<br>
        $ds9 -regions group foo copy<br>
        $ds9 -regions group foo delete<br>
        $ds9 -regions group foo cut<br>
        $ds9 -regions group foo font {times 14 bold}<br>
        $ds9 -regions group foo move 100 100<br>
        $ds9 -regions group foo movefront<br>
        $ds9 -regions group foo moveback<br>
        $ds9 -regions group foo property delete no<br>
        $ds9 -regions copy<br>
        $ds9 -regions cut<br>
        $ds9 -regions paste wcs<br>
        $ds9 -regions undo<br>
      </tt>
      <p><b><a name="red"></a>red</b></p>
      <p>For RGB frames, sets the current color channel to red.</p>
      <tt> Syntax:<br>
        -red<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -red foo.fits<br>
      </tt>
      <p><b> <a name="restore"></a>restore</b></p>
      <p>Restore DS9 to a previous state from a backup save set. </p>
      <tt> Syntax: <br>
        -restore &lt;filename&gt;<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -restore ds9.bck</tt><br>
      <p><b> <a name="rgb"></a>rgb</b></p>
      <p>Create RGB frame and control RGB frame parameters.</p>
      <tt> Syntax: <br>
        -rgb []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;[red|green|blue]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;[channel [red|green|blue]]<br>
        &nbsp;&nbsp; &nbsp; [view [red|green|blue] [yes|no]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;[system &lt;coordsys&gt;]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;[lock
        wcs|crop|slice|bin|scale|scalelimits|colorbar|block|smooth
        [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -rgb # create new rgb frame<br>
        $ds9 -rgb red # set current channel to red<br>
        $ds9 -rgb channel red # set current channel to red<br>
        $ds9 -rgb view blue no # turn off blue channel<br>
        $ds9 -rgb system wcs # set rgb coordinate system<br>
      </tt><tt>$ds9 -rgb lock wcs yes</tt><br>
      <tt>$ds9 -rgb lock crop yes</tt><br>
      <tt>$ds9 -rgb lock slice yes</tt><br>
      <tt>$ds9 -rgb lock bin yes</tt><br>
      <tt> $ds9 -rgb lock scale yes<br>
        $ds9 -rgb lock scalelimits yes<br>
        $ds9 -rgb lock colorbar yes<br>
        $ds9 -rgb lock block yes<br>
        $ds9 -rgb lock smooth yes<br>
        $ds9 -rgb open<br>
        $ds9 -rgb close<br>
      </tt><br>
      <p><b> <a name="rgbarray"></a>rgbarray</b></p>
      <p>Load raw data array cube into rgb frame.<br>
      </p>
      <tt> Syntax:<br>
        -rgbarray
&lt;filename&gt;[[xdim=&lt;x&gt;,ydim=&lt;y&gt;|dim=&lt;dim&gt;],[zdim=3],bitpix=&lt;b&gt;,skip=&lt;s&gt;,endian=[little|big]]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -rgbarray foo.arr[dim=512,zdim=3,bitpix=-32,endian=little]</tt><br>
      <tt>$cat foo.arr | ds9 -rgbarray
        -[dim=512,zdim=3,bitpix=-32,endian=little]</tt><br>
      <p><b> <a name="rgbcube"></a>rgbcube</b></p>
      <p>Load FITS rgbcube into rgb frame.<br>
      </p>
      <tt> Syntax:<br>
        -rgbcube &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -rgbcube foo.fits</tt><tt><tt><br>
        </tt>$cat foo.fits | ds9 -rgbcube -</tt><br>
      <p><b> <a name="rgbimage"></a>rgbimage</b></p>
      <p>Load FITS rgbimage into rgb frame.<br>
      </p>
      <tt> Syntax:<br>
        -rgbimage &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -rgbimage foo.fits</tt><tt><tt><br>
        </tt>$cat foo.fits | ds9 -rgbimage -</tt> <br>
      <p><b> <a name="rotate"></a>rotate</b></p>
      <p>Controls the rotation angle (in degrees) of the current frame.
      </p>
      <tt> Syntax: <br>
        -rotate [&lt;value&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to &lt;value&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -rotate 45 <br>
        $ds9 -rotate to 30<br>
        $ds9 -rotate open<br>
        $ds9 -rotate close<br>
      </tt>
      <p><b><a name="samp"></a>samp</b></p>
      <p>Configure SAMP protocol. </p>
      <tt> Syntax: <br>
        -samp [yes|no|connect|disconnect] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [broadcast [image|table]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [send [image|table]
        &lt;application&gt;]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -samp yes<br>
      </tt><tt><tt>$ds9 -samp connect<br>
        </tt>$ds9 -samp broadcast image<br>
        $ds9 -samp send image aladin</tt><br>
      <p><b> <a name="save"></a>save<br>
        </b></p>
      <p>Save loaded image data of current frame as FITS.</p>
      <tt> Syntax: <br>
        -save </tt><tt>[fits|rgbimage|rgbcube|mecube|mosaic|mosaicimage]




























































        &lt;filename&gt; [image|table|slice]</tt> <br>
      <tt> &nbsp;<br>
        Example: <br>
        $ds9 -save foo.fits</tt><br>
      <tt>$ds9 -save fits foo.fits image</tt><br>
      <tt>$ds9 -save fits foo.fits table<br>
        $ds9 -save fits foo.fits slice</tt><br>
      <tt>$ds9 -save rgbimage foo.fits<br>
      </tt><tt>$ds9 -save rgbcube foo.fits</tt><br>
      <tt>$ds9 -save mecube foo.fits</tt><br>
      <tt>$ds9 -save mosaic foo.fits</tt><br>
      <tt>$ds9 -save mosaicimage foo.fits</tt><br>
      <p><b> <a name="saveimage"></a>saveimage</b></p>
      <p>Create a snap shot of the current DS9 window and save in
        specified image format. If no format specified, the file name
        extension is used to determine the output format. Optional
        parameters: <tt>jpeg</tt> quality (1-100) and <tt>tiff</tt>
        compression method. </p>
      <tt> Syntax: <br>
        -saveimage </tt><tt>[fits|eps|gif|tiff|jpeg|png] </tt><tt>&lt;filename&gt;<br>
        -saveimage &lt;filename&gt;.jpeg [1-100]<br>
        -saveimage &lt;filename&gt;.tiff [none|jpeg|packbits|deflate]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -saveimage ds9.tiff<br>
        $ds9 -saveimage jpeg ds9.jpeg 75</tt><tt><br>
      </tt>
      <p><b> <a name="scale"></a>scale</b></p>
      <p>Controls the limits and color scale distribution. </p>
      <tt> Syntax: <br>
        -scale [linear|log|pow|sqrt|squared|asinh|sinh|histequ]<br>
        &nbsp; &nbsp; &nbsp;&nbsp; [log exp &lt;value&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [datasec yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [limits &lt;minvalue&gt;
        &lt;maxvalue&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [mode
        minmax|&lt;value&gt;|zscale|zmax] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [scope local|global] <br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [match]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match limits]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [lock [yes|no]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock limits [yes|no]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -scale linear<br>
        $ds9 -scale log exp 100<br>
        $ds9 -scale datasec yes <br>
        $ds9 -scale histequ <br>
        $ds9 -scale limits 1 100 <br>
        $ds9 -scale mode zscale <br>
        $ds9 -scale mode 99.5 <br>
        $ds9 -scale scope local<br>
        $ds9 -scale match<br>
        $ds9 -scale match limits<br>
        $ds9 -scale lock yes<br>
        $ds9 -scale lock limits yes<br>
        $ds9 -scale open<br>
        $ds9 -scale close</tt><tt><br>
      </tt>
      <p><b> <a name="shm"></a>shm</b></p>
      <p>Load a shared memory segment into the current frame. </p>
      <tt> Syntax: <br>
        -shm [&lt;key&gt; [&lt;filename&gt;]] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [key &lt;id&gt; [&lt;filename&gt;]] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [shmid &lt;id&gt; [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [fits [key|shmid] &lt;id&gt;
        [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [mosaicimage
        [iraf|wcs|wcsa...wcsz|wfpc2] [key|shmid] &lt;id&gt;
        [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [mosaicimagenext [wcs|wcsa...wcsz]
        [key|shmid] &lt;id&gt; [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;[mosaic [iraf|wcs|wcsa...wcsz]
        [key|shmid] &lt;id&gt; [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [rgbcube [key|shmid] &lt;id&gt;
        [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [rgbimage [key|shmid] &lt;id&gt;
        [&lt;filename&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [rgbarray [key|shmid] &lt;id&gt;
[xdim=&lt;x&gt;,ydim=&lt;y&gt;|dim=&lt;dim&gt;,zdim=3],bitpix=&lt;b&gt;,[skip=&lt;s&gt;]]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [array [key|shmid] &lt;id&gt;
[xdim=&lt;x&gt;,ydim=&lt;y&gt;|dim=&lt;dim&gt;],bitpix=&lt;b&gt;,[skip=&lt;s&gt;]]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -shm 102 <br>
        $ds9 -shm key 102 <br>
        $ds9 -shm shmid 102 foo<br>
        $ds9 -shm fits 100 foo<br>
        $ds9 -shm mosaicimage iraf key 100 foo <br>
        $ds9 -shm mosaicimage wcs key 100 foo <br>
        $ds9 -shm mosaicimage wcsa key 100 foo <br>
        $ds9 -shm mosaicimage wfpc2 key 100 foo <br>
        $ds9 -shm mosaicimagenext wcs key 100 foo <br>
        $ds9 -shm mosaic iraf key 100 foo<br>
        $ds9 -shm mosaic wcs key 100 foo<br>
        $ds9 -shm rgbcube key 100 foo<br>
        $ds9 -shm rgbimage key 100 foo<br>
        $ds9 -shm rgbarray shmid 102 [dim=32,zdim=3,bitpix=-32]<br>
        $ds9 -shm array shmid 102 [dim=32,bitpix=-32]<br>
      </tt>
      <p><b> <a name="sia"></a>sia<br>
        </b></p>
      <p>Support for VO Simple Image Access protocol. The first command
        will create a new search. All other commands operated on the
        last search created, unless indicated otherwise.</p>
      <tt> Syntax: <br>
      </tt><tt>-sia </tt><tt><tt>[2mass|akari|astrowise|cadc|cxc|mast|sdss|skyview|tgssadr</tt><tt>]</tt><br>
        <br>
      </tt><tt> </tt><tt>&nbsp;</tt><tt>&nbsp;&nbsp;&nbsp;
        [&lt;ref&gt;] [cancel]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [clear]<br>
      </tt><tt>&nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [close]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [coordinate &lt;ra&gt;
        &lt;dec&gt; &lt;coordsys&gt;]</tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;]
        [crosshair]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [export sb|tsv
        &lt;filename&gt;]<br>
      </tt><tt>&nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [name &lt;object&gt;]<br>
      </tt><tt>&nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [print]</tt><br>
      <tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [retrieve]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [save
        &lt;filename&gt;]</tt><br>
      <tt>&nbsp;&nbsp; &nbsp; [&lt;ref&gt;] [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]</tt><br>
      <tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [sky
        &lt;skyframe&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [skyformat
        &lt;skyformat&gt;]<br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [system
        &lt;coordsys&gt;]</tt><tt><br>
      </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; </tt><tt>[&lt;ref&gt;] [update]</tt><br>
      <tt><br>
        Example:<br>
      </tt><tt>$ds9 -sia 2mass<br>
      </tt><tt>$ds9 -sia cancel<br>
      </tt><tt>$ds9 -sia clear<br>
      </tt><tt>$ds9 -sia close<br>
      </tt><tt>$ds9 -sia coordinate 202.48 47.21 fk5<br>
      </tt><tt>$ds9 -sia crosshair<br>
      </tt><tt>$ds9 -sia export tsv bar.tsv<br>
      </tt><tt>$ds9 -sia name m51<br>
      </tt><tt>$ds9 -sia print</tt><br>
      <tt>$ds9 -sia retrieve<br>
      </tt><tt> $ds9 -sia save foo.xml<br>
      </tt><tt>$ds9 -sia size 1 1 degrees</tt><br>
      <tt>$ds9 -sia sky fk5<br>
        $ds9 -sia skyformat degrees<br>
      </tt><tt>$ds9 -sia system wcs</tt><tt><br>
      </tt><tt>$ds9 -sia update<br>
        <br>
      </tt><b><a name="single"></a>single</b>
      <p>Set display mode to single. </p>
      <tt> Syntax: <br>
        -single <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -single<br>
      </tt>
      <p><b><a name="skyview"></a>skyview </b></p>
      <p>Support for SkyView image server at HEASARC. </p>
      <tt> Syntax: <br>
        -skyview []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name
        &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord
        &lt;ra&gt; &lt;dec&gt; degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size
        &lt;width&gt; &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [pixels
        &lt;width&gt; &lt;height&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame
        new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update
        frame|crosshair]<br>
        &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [survey &lt;survey&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -skyview<br>
        $ds9 -skyview m31 <br>
        $ds9 -skyview name m31 <br>
        $ds9 -skyview coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -skyview size 60 60 arcmin<br>
        $ds9 -skyview pixels 600 600<br>
        $ds9 -skyview save yes<br>
        $ds9 -skyview frame current<br>
        $ds9 -skyview update frame <br>
        $ds9 -skyview survey sdssi<br>
        $ds9 -skyview open<br>
        $ds9 -skyview close<br>
      </tt>
      <p><b><a name="sleep"></a>sleep </b></p>
      <p>Delays execution for specified number of seconds. Default is 1
        second.</p>
      <tt> Syntax: <br>
        -sleep [#]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -sleep <br>
        $ds9 -sleep 2<br>
      </tt>
      <p><b> <a name="slice"></a>slice<br>
          noslice<br>
        </b></p>
      <p>Indicates next files loaded are to treated as slices of a cube.
        Can be disabled with <tt>noslice</tt> command.<br>
      </p>
      <tt> Syntax: <br>
        -slice &lt;filename&gt;<br>
        -noslice<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -slice *.fits<br>
        $ds9 -noslice<br>
      </tt>
      <p><b><a name="smooth"></a>smooth</b></p>
      <p>Smooth current image or set smooth parameters.</p>
      <tt> Syntax:<br>
        -smooth []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [function
        boxcar|tophat|gaussian]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [radius &lt;int&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock [yes|no]]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -smooth<br>
        $ds9 -smooth yes<br>
        $ds9 -smooth function tophat<br>
        $ds9 -smooth radius 4<br>
        $ds9 -smooth open<br>
        $ds9 -smooth close<br>
        $ds9 -smooth match<br>
        $ds9 -smooth lock yes<br>
      </tt>
      <p><b> <a name="squared"></a>squared</b></p>
      <p>Select squared scale function for the current frame. </p>
      <tt> Syntax: <br>
        -squared <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -squared </tt>
      <p><b> <a name="sqrt"></a>sqrt</b></p>
      <p>Select square soot scale function for the current frame. </p>
      <tt> Syntax: <br>
        -sqrt <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -sqrt </tt>
      <p><b> <a name="source"></a>source</b></p>
      <p>Source TCL code from a file. </p>
      <tt> Syntax: <br>
        -source &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -source extensions.tcl<br>
      </tt>
      <p><b> <a name="tcl"></a>tcl</b></p>
      <p>Execute one TCL command. Note: this a different behavior from
        previous versions of DS9.<br>
      </p>
      <tt> Syntax:<br>
        -tcl &lt;tcl command&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -tcl 'puts "Hello, World"'</tt><br>
      <p><b> <a name="threads"></a>threads</b></p>
      <p>Set number of process threads for functions which are
        multi-threaded. </p>
      <tt> Syntax:<br>
        -threads #<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -threads 8</tt><br>
      <br>
      <b><a name="tiff"></a>tiff</b><br>
      <p>Load TIFF image into current frame.<br>
      </p>
      <tt> Syntax:<br>
        -tiff &lt;filename&gt;<br>
        &nbsp;<br>
        Example: <br>
      </tt><tt>$ds9 -tiff foo.tiff</tt><tt><tt><tt><tt><br>
            </tt></tt> </tt></tt><tt><tt>$cat foo.fits | ds9 -tiff -</tt></tt><tt><br>
      </tt>
      <p><b> <a name="tile"></a>tile</b></p>
      <p>Controls the tile display mode. </p>
      <tt> Syntax: <br>
        -tile []<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [mode grid|column|row] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid mode automatic|manual] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid direction x|y]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid layout &lt;col&gt;
        &lt;row&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [grid gap &lt;pixels&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [row] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [column] <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -tile <br>
        $ds9 -tile yes <br>
        $ds9 -tile mode row <br>
        $ds9 -tile grid <br>
        $ds9 -tile grid mode manual<br>
        $ds9 -tile grid direction x <br>
        $ds9 -tile grid layout 5 5 <br>
        $ds9 -tile grid gap 10 <br>
        $ds9 -tile row <br>
        $ds9 -tile column </tt>
      <p><b> <a name="title"></a>title</b></p>
      <p>Changes the display window title to the specified name. </p>
      <tt> Syntax: <br>
        -title name <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -title Voyager </tt>
      <p><b> <a name="unix"></a>unix</b></p>
      <p>Set the IRAF unix socket name, used by IRAF to communicate with
        DS9. The default is /tmp/.IMT%d, so that the standard IRAF unix
        socket is defined. </p>
      <tt> Syntax: <br>
        -unix name <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -unix "/tmp/.IMT%d" </tt>
      <p><b> <a name="unix_only"></a>unix_only</b></p>
      <p>Only use the IRAF unix socket name. This is the same as -fifo
        none -port 0. </p>
      <tt> Syntax: <br>
        -unix_only <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -unix_only<br>
      </tt>
      <p><b> <a name="update"></a>update</b></p>
      <p>Updates the current frame or region of frame. In the second
        form, the first argument is the number of the fits HDU (starting
        with 1) and the remaining args are a bounding box in IMAGE
        coordinates. By default, the screen is updated the next
        available idle cycle. However, you may force an immediate update
        by specifying the NOW option. </p>
      <tt> Syntax: <br>
        -update [] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [# x1 y1 x2 y2]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [now] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [now # x1 y1 x2 y2]<br>
        &nbsp; <br>
        Example: <br>
        $ds9 -update <br>
        $ds9 -update 1 100 100 300 400 <br>
        $ds9 -update now <br>
        $ds9 -update now 1 100 100 300 400</tt><br>
      <p><b> <a name="url"></a>url</b></p>
      <p>Load FITS from URL into the current frame</p>
      <tt> Syntax: <br>
        -url &lt;url&gt;<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -url http://foo.bar.edu/foo.fits</tt><tt> </tt>
      <p><b> <a name="version"></a>version</b></p>
      <p>Returns the current version of DS9 and exits. </p>
      <tt> Syntax: <br>
        -version <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -version </tt>
      <p><b> <a name="view"></a>view</b></p>
      <p>Controls the GUI and visible RGB frame color channels. </p>
      <tt> Syntax: <br>
        -view [layout horizontal|vertical]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [keyvalue &lt;string&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [info yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [panner yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [magnifier yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [buttons yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [colorbar yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [graph horizontal|vertical
        yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [filename yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [object yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [keyword yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [minmax yes|no]<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [lowhigh yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [units yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [image|physical|wcs|wcsa...wcsz
        yes|no]<br>
      </tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame yes|no] <br>
          </tt></tt>&nbsp;&nbsp;&nbsp; &nbsp; [red yes|no]<br>
        &nbsp; &nbsp; &nbsp; [green yes|no]<br>
        &nbsp; &nbsp; &nbsp; [blue yes|no]</tt><tt><tt><br>
          &nbsp; </tt> <br>
        Example: <br>
        $ds9 -view layout vertical<br>
        $ds9 -view keyvalue BITPIX<br>
        $ds9 -view info yes<br>
        $ds9 -view panner yes<br>
        $ds9 -view magnifier yes<br>
        $ds9 -view buttons yes<br>
        $ds9 -view colorbar yes<br>
        $ds9 -view graph horizontal yes<br>
        $ds9 -view filename yes<br>
        $ds9 -view object yes<br>
        $ds9 -view keyword yes<br>
        $ds9 -view minmax yes<br>
        $ds9 -view lowhigh yes<br>
        $ds9 -view wcsa yes<br>
      </tt><tt>$ds9 -view frame yes</tt><br>
      <tt>$ds9 -view red yes<br>
        $ds9 -view green yes<br>
        $ds9 -view blue yes</tt><tt><br>
      </tt>
      <p><b> <a name="visual"></a>visual</b></p>
      <p>Force DS9 to use the specified color visual. This argument MUST
        be the first argument listed. Requires the visual be available.
      </p>
      <tt> Syntax: <br>
        -visual
        [pseudocolor|pseudocolor8|truecolor|truecolor8|truecolor16|truecolor24]
        &nbsp;<br>
        Example: <br>
        $ds9 -visual truecolor24<br>
      </tt>
      <p><b> <a name="vla"></a>vla</b></p>
      <p>Support for VLA Sky Survey.</p>
      <tt> Syntax: <br>
        -vla []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord &lt;ra&gt;
        &lt;dec&gt; degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update frame|crosshair]<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [survey first|stripe82]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -vla<br>
        $ds9 -vla m31 <br>
        $ds9 -vla name m31 <br>
        $ds9 -vla coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -vla size 60 60 arcmin<br>
        $ds9 -vla save yes<br>
        $ds9 -vla frame current<br>
        $ds9 -vla update frame<br>
        $ds9 -vla survey stripe82<br>
        $ds9 -vla open<br>
        $ds9 -vla close</tt><br>
      <p><b> <a name="vlss"></a>vlss</b></p>
      <p>Support for NRAO VLSS Sky Survey.</p>
      <tt> Syntax: <br>
        -vlss []<br>
        &nbsp;&nbsp;&nbsp; &nbsp; [&lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [name &lt;object&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [coord &lt;ra&gt; &lt;dec&gt;
        degrees|sexagesimal] # in wcs fk5<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [size &lt;width&gt;
        &lt;height&gt; degrees|arcmin|arcsec]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [save yes|no]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [frame new|current]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [update frame|crosshair]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -vlss<br>
        $ds9 -vlss m31 <br>
        $ds9 -vlss name m31 <br>
        $ds9 -vlss coord 00:42:44.404 +41:16:08.78 sexagesimal<br>
        $ds9 -vlss size 60 60 arcmin<br>
        $ds9 -vlss save yes<br>
        $ds9 -vlss frame current<br>
        $ds9 -vlss update frame<br>
        $ds9 -vlss open<br>
        $ds9 -nvess close</tt>
      <p><b> <a name="vo"></a>vo</b></p>
      <p>Invoke an connection to a Virtual Observatory site. </p>
      <tt> Syntax: <br>
        -vo [method xpa|mime]<br>
        &nbsp;&nbsp;&nbsp; [server &lt;url&gt;]<br>
        &nbsp;&nbsp;&nbsp; [internal yes|no]<br>
        &nbsp;&nbsp;&nbsp; [delay #]<br>
        &nbsp;&nbsp;&nbsp; [&lt;url&gt;]<br>
        &nbsp;&nbsp;&nbsp; [connect &lt;url&gt;]<br>
        &nbsp;&nbsp;&nbsp; [disconnect &lt;url&gt;]<br>
        &nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example:<br>
        $ds9 -vo method xpa<br>
        $ds9 -vo server "http://foo.bar.edu/list.txt"<br>
        $ds9 -vo internal yes<br>
        $ds9 -vo delay 15 # keep-alive delay<br>
        $ds9 -vo chandra-ed<br>
        $ds9 -vo connect chandra-ed<br>
        $ds9 -vo disconnect chandra-ed<br>
        $ds9 -vo open<br>
        $ds9 -vo close<br>
      </tt>
      <p><b> <a name="wcs"></a>wcs</b></p>
      <p>Controls the World Coordinate System for the current frame. If
        the wcs system, skyframe, or skyformat is modified, the info
        panel, compass, grid, and alignment will be modified
        accordingly. Also, a new WCS specification can be loaded and
        used by the current image regardless of the WCS that was
        contained in the image file. Please see <a href="file.html#WCS">WCS</a>
        for more information. </p>
      <tt> Syntax: <br>
        -wcs [[system] wcs|wcsa...wcsz] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [[sky] fk4|fk5|icrs|galactic|ecliptic]
        <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [[skyformat] degrees|sexagesimal] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [align yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [reset [#]] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [replace [#] &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [append [#] &lt;filename&gt;] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -wcs wcs <br>
        $ds9 -wcs system wcs<br>
      </tt><tt>$ds9 -wcs fk5 <br>
      </tt><tt>$ds9 -wcs sky fk5 <br>
      </tt><tt>$ds9 -wcs sexagesimal <br>
      </tt><tt>$ds9 -wcs skyformat sexagesimal <br>
        $ds9 -wcs align yes <br>
        $ds9 -wcs reset <br>
        $ds9 -wcs reset 3<br>
        $ds9 -wcs replace foo.wcs <br>
        $ds9 -wcs replace 3 foo.wcs <br>
        $ds9 -wcs append foo.wcs<br>
        $ds9 -wcs append 3 foo.wcs<br>
        $ds9 -wcs open<br>
        $ds9 -wcs close<br>
      </tt>
      <p><b> <a name="web"></a>web</b></p>
      <p>Display specified URL in the web display. </p>
      <tt> Syntax:<br>
        -web [new|&lt;webname&gt;] [&lt;url&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [&lt;webname&gt;] [click
        back|forward|stop|reload|#]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [&lt;webname&gt;] [clear]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [&lt;webname&gt;] [close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -web www.cnn.com<br>
        $ds9 -web new www.cnn.com<br>
        $ds9 -web hvweb www.apple.com<br>
        $ds9 -web click back<br>
        $ds9 -web click 2<br>
        $ds9 -web clear<br>
        $ds9 -web close<br>
      </tt>
      <p><b> <a name="width"></a>width</b></p>
      <p>Set the width of the image display window. Use the <a
          href="command.html#geometry">geometry</a> command to set the
        overall width and height of the ds9 window.</p>
      <tt> Syntax: <br>
        -width [&lt;value&gt;]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -width 512<br>
      </tt>
      <p><b> <a name="xpa"></a>xpa</b></p>
      <p>Configure XPA.</p>
      <tt> Syntax:<br>
        -xpa [yes|no] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [inet|local|unix|localhost] <br>
        &nbsp;&nbsp;&nbsp;&nbsp; [noxpans]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [connect]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [disconnect]<br>
        &nbsp;&nbsp;&nbsp;&nbsp; [info]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -xpa no <br>
        $ds9 -xpa local <br>
        $ds9 -xpa noxpans<br>
        $ds9 -xpa connect<br>
        $ds9 -xpa disconnect<br>
        $ds9 -xpa info<br>
      </tt>
      <p><b> <a name="zmax"></a>zmax</b></p>
      <p>Set Scale Limits based&nbsp; on the <i>IRAF</i> algorithm and
        maximum data value. </p>
      <tt> Syntax: <br>
        -zmax <br>
        &nbsp;<br>
        Example: <br>
        $ds9 -zmax </tt>
      <p><b> <a name="zscale"></a>zscale</b></p>
      <p>Set Scale Limits based&nbsp; on the <i>IRAF</i> algorithm. </p>
      <tt> Syntax: <br>
        -zscale []<br>
        &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [contrast]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [sample]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [line]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -zscale<br>
        $ds9 -zscale contrast .25<br>
        $ds9 -zscale sample 600<br>
        $ds9 -zscale line 120<br>
      </tt>
      <p><b> <a name="zoom"></a>zoom</b></p>
      <p>Controls the current zoom value for the current frame. </p>
      <tt> Syntax: <br>
        -zoom [&lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;value&gt; &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to &lt;value&gt;]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to &lt;value&gt; &lt;value&gt;]
        <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [in]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [out]<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [to fit] <br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
        &nbsp;<br>
        Example: <br>
        $ds9 -zoom 2<br>
        $ds9 -zoom 2 4<br>
        $ds9 -zoom to 4<br>
        $ds9 -zoom to 2 4 <br>
        $ds9 -zoom in<br>
        $ds9 -zoom out<br>
        $ds9 -zoom to fit<br>
        $ds9 -zoom open<br>
        $ds9 -zoom close<br>
        <br>
      </tt> </blockquote>
  </body>
</html>