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<html>
<head>
<title>EAGLE Help: WINDOW</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>WINDOW</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Zooms in and out of a drawing.
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>WINDOW;</tt><br>
<tt>WINDOW *;</tt><br>
<tt>WINDOW * *;</tt><br>
<tt>WINDOW * * *</tt><br>
<tt>WINDOW scale_factor</tt><br>
<tt>WINDOW FIT</tt>
<p>
<dt>
<b>Mouse</b>
<dd>
Left-click&drag works as shortcut for "<tt>* *;</tt>".
<p>
<dt>
<b>Keyboard</b>
<dd>
<tt>Alt+F2: WINDOW FIT </tt> Fit drawing on the screen<br>
<tt>F2: WINDOW; </tt> Redraw screen<br>
<tt>F3: WINDOW 2 </tt> Zoom in by a factor of 2<br>
<tt>F4: WINDOW 0.5 </tt> Zoom out by a factor of 2<br>
<tt>F5: WINDOW (@);</tt> Cursor pos. is new center (if a command is active)
<p>
</dl>
The WINDOW command is used to zoom in and out of the drawing and to
change the position of the drawing on the screen. The command can
be used with up to three mouse clicks. If there are fewer, it must
be terminated with a semicolon.
<p>
<b>Refresh screen</b>
<p>
If you use the WINDOW command followed by a semicolon, EAGLE redraws
the screen without changing the center or the scale. This is useful
if error messages cover part of the drawing.
<p>
<b>New center</b>
<p>
The WINDOW command with one point causes that point to become
the center of a new screen display of the drawing. The scaling of
the drawing remains the same. You can also use the sliders of the
working area to move the visible area of the drawing. The function
key F5 causes the current position of the cursor to be the new center.
<p>
<b>Corner points</b>
<p>
The WINDOW command with two points defines a rectangle with
the specified points at opposite corners. The rectangle expands to
fill the screen providing a close-up view of the specified portion
of the drawing.
<p>
<b>New center and zoom</b>
<p>
You can use the WINDOW command with three points. The first
point defines the new center of the drawing and the display becomes
either larger or smaller, depending on the ratios of the spacing between
the other points. In order to zoom in, the distance between point
1 and point 3 should be greater than the distance between point 1
and 2; to zoom out place point 3 between points 1 and 2.
<p>
<b>Zoom in and out</b>
<pre>
WINDOW 2;
</pre>
Makes the elements appear twice as large.
<pre>
WINDOW 0.5;
</pre>
Reduces the size of the elements by a factor of two.
<p>
You can specify an integer or real number as the argument to the WINDOW
command to scale the view of the drawing by the amount entered. The
center of the window remains the same.
<p>
<b>The whole drawing</b>
<pre>
WINDOW FIT;
</pre>
fits the entire drawing on the screen.
<p>
<b>Very large zoom factors</b>
<p>
By default the maximum zoom factor is limited in such a way that
an area of 1mm (about 40mil) in diameter will be shown using the full editor window.
If you need to zoom in further, you can uncheck "Options/User interface/Limit zoom factor"
and will then be able to zoom in all the way until the finest editor grid (0.1 micron)
can be seen.
<p>
When zooming very far into a drawing, the following things may happen:
<ul>
<li>Texts that are not using the vector font may not be shown if they are larger
than the editor window.
<li>Circles and Arcs are approximated and therefore may not appear at their exact
location (especially if they have a very small width).
<li>Whether or not the finest grid will be visible when zooming all the way in depends
on your screen resolution, the editor window size and the value of
"Options/Set/Misc/Min. visible grid size".
</ul>
<hr>
<table width=100% cellspacing=0 border=0><tr><td align=left><font face=Helvetica,Arial>
<a href=index.htm>Index</a>
</font></td><td align=right><font face=Helvetica,Arial size=-1>
<i>Copyright © 2005 CadSoft Computer GmbH</i>
</font></td></tr></table>
<hr>
</font>
</body>
</html>
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