resource is used to
define the possible expanded values of the
<tt><a href="../rcvars.html#ICON">$ICON$</a></tt> resource variable.
</p>

<p>The ICON resource can only be defined via the resource file element.
The format of each line in the <CODE>ICONS</CODE> element is as
follows:
</p>
<pre>
<var>content-type</var>:<var>url</var>
</pre>

<p>The definition of each item is a follows:

<dl>

<dt><var>content-type</var></dt>
<dd><p>MIME content-type that an icon should be associated to.
    Examples: <tt>text/