Original commit message from CVS:
Various updates to PWG; mainly adding information about types and
properties.
Removed concepts.sgml and typesnprops.sgml; merged into main file. I was
finding that having all the separate subfiles simply stopped me from
finding what I wanted to edit. Maybe I'll split it up again later, but
this is much better for now.
Original commit message from CVS:
Wrote a little more text, and did more of the work on making the sections.
When this manual has text in all these sections its going to be pretty
impressive...
Original commit message from CVS:
Move plugin example code to new location, and put it into build system.
Add work on firstplugin chapter of pwg.
Fix typo in quotes.
Add @'s before commands in manuals.mak
Original commit message from CVS:
Added framework for writing filter writers guide.
Extracted much of the makefile from docs/manual into a shared file which
is included, so it can be re-used.
