r><a name="SEC3" href="#TOC1">DESCRIPTION</a><br>
<P>
If <b>pcretest</b> is given two filename arguments, it reads from the first and
writes to the second. If it is given only one filename argument, it reads from
that file and writes to stdout. Otherwise, it reads from stdin and writes to
stdout, and prompts for each line of input, using "re&#62;" to prompt for regular
expressions, and "data&#62;" to prompt for data lines.
</P>
<P>
The program handles any number of sets of input on a single input file. Each