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The macro <code>NOUSERMACRO</code> controls <code>yodl</code>'s warnings in the following 
respect. When <code>yodl</code> is started with the <code>-w</code> flag on the command line, 
then warnings are generated when <code>yodl</code> encounters a possible macro 
name, followed by a parameter list, but fails to lookup the macro. The 
<code>yodl</code> program then prints something like <code>cannot expand possible user 
macro</code>. 

Examples of such sequences are, <code>The necessary file(s) are in 
/usr/local/lib/yodl</code>, or <code>see the manual page for sed(1)</code>. The candidate 
macros are hee <code>file</code> and <code>sed</code>; these names could just as well be `valid' 
user macros followed by their parameter list.

When a corresponding <code>NOUSERMACRO</code> statement appears <strong>before</strong> <code>yodl</code> 
encounters the candidate macros, no warning is generated. A fragment might 
therefore be:

<pre>
NOUSERMACRO(file sed)
The necessary file(s) are in ...
See the manual page for sed(1).

</pre>

<p>The <code>NOUSERMACRO</code> accepts one or more names in its argument, separated by 
spaces, commas, colons, or semi-colons.
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Copyright (c) 1997, 1998, 1999 Karel Kubat and Jan Nieuwenhuizen.

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