Why are you doing this? You seem to be doing the complete opposite of one
guy who posts here, charging for his piddly booklett $17!!
Jim
What I'm *not* trying to do is gazump St. Clair. His materials are excellent.
His booklet is not piddly, it contains good information from an expert
practitioner. Anyone serious about self-educating themselves in PID should read
it.
PIDassist has a different approach, and is free because it also promotes and
supports a particular hardware product (which does not invalidate its
educational value one iota).
