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<html>
<head>
<title>EAGLE Help: USE</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>USE</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Marks a library for use.
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>USE</tt><br>
<tt>USE -*;</tt><br>
<tt>USE library_name..;</tt>
<p>
</dl>
<b>See also</b> <a href=26.htm>ADD</a>,
<a href=80.htm>REPLACE</a>
<p>
The USE command marks a library for later use with the
<a href=26.htm>ADD</a> or <a href=80.htm>REPLACE</a> command.
<p>
If you activate the USE command without a parameter, a file dialog
will appear that lets you select a library file.
If a path for libraries has been defined in the
"<u>O</u>ptions/<u>D</u>irectories" dialog,
the libraries from the first entry in this path are shown in the file dialog.
<p>
The special parameter <tt>-*</tt> causes all previously marked libraries
to be dropped.
<p>
<tt>library_name</tt> can be the full name of a library or it can contain
wildcards.
If <tt>library_name</tt> is the name of a directory, all libraries from
that directory will be marked.
<p>
The suffix <tt>.lbr</tt> can be omitted.
<p>
Note that when adding a device or package to a drawing, the complete library
information for that object is copied into the drawing file, so that
you don't need the library for changing the drawing later.
<p>
Changes in a library have no effect on existing drawings.
See the <a href=95.htm>UPDATE</a> command if you want to
update parts from modified libraries.
<p>
<b>Using Libraries via the Control Panel</b>
<p>
Libraries can be easily marked for use in the <a href=11.htm>Control Panel</a>
by clicking on their activation icon (which changes its color to indicate that this
library is being used), or by selecting "Use" from the library's context menu.
Through the context menu of the "Libraries" entry in the Control Panel it is also
possible to use <i>all</i> of the libraries or <i>none</i> of them.
<p>
<b>Used Libraries and Projects</b>
<p>
The libraries that are currently in use will be stored in the project file
(if a project is currently open).
<p>
<b>Examples</b>
<p>
<table>
<tr><td valign=top><font face=Helvetica,Arial><tt>USE</tt> </font></td><td valign=top><font face=Helvetica,Arial>opens the file dialog to choose a library</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>USE -*;</tt> </font></td><td valign=top><font face=Helvetica,Arial>drops all previously marked libraries</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>USE demo trans*;</tt> </font></td><td valign=top><font face=Helvetica,Arial>marks the library demo.lbr and all libraries with names matching trans*.lbr</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>USE -* /eagle/lbr;</tt> </font></td><td valign=top><font face=Helvetica,Arial>first drops all previously marked libraries and then marks all libraries from the directory /eagle/lbr</font></td></tr>
</table>
<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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