>
<table width="95%" align="center">
<tr><td>
The character that invokes word substitution if found at the start of
a line.  The default is <code>^</code>. 
</td></tr>
</table>

<p>
<table width="100%">
<tr>
<td align="left">char <b>history_comment_char</b><i>
     </i></td>
<td align="right">Variabele</td>
</tr>
</table>
<table width="95%" align="center">
<tr><td>
During tokenization, if this character is seen as the first character
of a word, then it and all subsequent characters up to a newline are
ignor