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<H1>6.33. on Macro</H1>
<HR>
<H2><A NAME="Interface">Interface</A></H2>
<P>The general syntax is:</P>
<PRE>
!<STRONG>on</STRONG> type mask ; [id] ; code
</PRE>
<P>The arguments are:</P>
<TABLE CLASS="columns" BORDER>
<TR CLASS="heading">
<TD>
<STRONG>Name</STRONG>
</TD>
<TD>
<STRONG>Type</STRONG>
</TD>
<TD>
<STRONG>Default</STRONG>
</TD>
<TD>
<STRONG>Rule</STRONG>
</TD>
</TR>
<TR>
<TD>
type
</TD>
<TD>
symbol
</TD>
<TD>
</TD>
<TD>
<paragraph|phrase|macro|filter|table>
</TD>
</TR>
<TR>
<TD>
mask
</TD>
<TD>
string
</TD>
<TD>
</TD>
<TD>
</TD>
</TR>
<TR>
<TD>
id
</TD>
<TD>
eventid
</TD>
<TD>
_NULL_
</TD>
<TD>
<\w+>
</TD>
</TR>
<TR>
<TD>
code
</TD>
<TD>
rest
</TD>
<TD>
</TD>
<TD>
</TD>
</TR>
</TABLE>
<P>See <A HREF="in_macif.html">Understanding Macro Interfaces</A>, if necessary.</P>
<HR>
<H2><A NAME="Description">Description</A></H2>
<P>The <EM>on</EM> macro specifies a rule to execute on certain events.</P>
<P>See <A HREF="../user/in_event.html">Event Processing</A> in the <A HREF="../user/ug_sdf.html">SDF User Guide</A> for further details.</P>
<HR>
<H2><A NAME="Examples">Examples</A></H2>
<P>To be completed ...</P>
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