on matching) by
default, but you can use a \C item in a data line (as described above) to
change this.
</P>
<P>
Inserting callouts can be helpful when using <b>pcretest</b> to check
complicated regular expressions. For further information about callouts, see
the
<a href="pcrecallout.html"><b>pcrecallout</b></a>
documentation.
</P>
<br><a name="SEC11" href="#TOC1">NON-PRINTING CHARACTERS</a><br>
<P>
When <b>pcretest</b> is outputting text in the compiled version of a pattern,
bytes other than 32-126 are alwa