 Kelly's ppp tool.
In contrast to ppp, which resolves all conditional compilation
directives without exception, with jpp symbols not only can be defined
but also undefined. Those symbols which are neither defined nor
explicitely undefined are considered
as of unknown status and it and its related source code remains
untouched.
</p>
<p>
The usage of jpp is not too hard. It is called via
</p>
<pre>jpp [options] &lt;input files&gt;...<br></pre>
Possible options are
<pre>  -i       Process includes<br>  -c     