When pCD.app was first written, it was based on version 0.3 of
hpcdtoppm.

The current version of hpcdtoppm is 0.4, and the source for that
version is included with pCD.app.  I had to make a few changes
to it so it compiles correctly on the NeXT.  For any files I've
changed, I also included the ".ORIG" copy of the file in case
someone wants to see what my changes have been.

I've incorporated parts of version 0.4 into pCD.app, although
most of pCD.app is still from version 0.3.  In the future I'd
like to reorganize pCD.app so that merging in new versions of
hpcdtoppm will be much easier.

   Garance Alistair Drosehn/Mar 27/1993