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<pre><tt><i><font color="#9A1900"># this is the language definition for the</font></i>
<i><font color="#9A1900"># language definition syntax itself</font></i>
<font color="#009900">comment</font> <b><font color="#0000FF">start</font></b> <font color="#FF0000">"#"</font>

<font color="#009900">preproc</font> <font color="#990000">=</font> <font color="#FF0000">"include"</font>

<font color="#009900">string</font> <b><font color="#0000FF">delim</font></b> <font color="#FF0000">"\""</font> <font color="#FF0000">"\""</font> <b><font color="#0000FF">escape</font></b> <font color="#FF0000">"\\"</font> <b><font color="#0000FF">multiline</font></b>
<font color="#009900">regexp</font> <b><font color="#0000FF">delim</font></b> <font color="#FF0000">"'"</font> <font color="#FF0000">"'"</font> <b><font color="#0000FF">escape</font></b> <font color="#FF0000">"\\"</font> <b><font color="#0000FF">multiline</font></b>
<font color="#009900">regexp</font> <b><font color="#0000FF">delim</font></b> <font color="#FF0000">"`"</font> <font color="#FF0000">"`"</font> <b><font color="#0000FF">escape</font></b> <font color="#FF0000">"\\"</font> <b><font color="#0000FF">multiline</font></b>

<font color="#009900">keyword</font> <font color="#990000">=</font> <font color="#FF0000">"state|environment|begin|end|delim|escape|start"</font><font color="#990000">,</font>
          <font color="#FF0000">"multiline|nested|vardef|exitall|exit"</font><font color="#990000">,</font>
          <font color="#FF0000">"redef|subst|nonsensitive"</font>

<font color="#009900">symbol</font> <font color="#990000">=</font> <font color="#FF0000">"=|+|,|(|)"</font>

<b><font color="#0000FF">vardef</font></b> <font color="#009900">ID</font> <font color="#990000">=</font> <font color="#FF6600">'[[:word:]]+'</font>

<font color="#009900">variable</font> <font color="#990000">=</font> <font color="#FF6600">'\$'</font> <font color="#990000">+</font> <font color="#009900">$ID</font>

<font color="#009900">variable</font> <font color="#990000">=</font> <font color="#009900">$ID</font>
</tt></pre>