PDQ is a compiler for Quiz.  It reads Quiz source code and produces a
compatibility mode PROG file, which runs the way you would expect a
well-behaved compiled program to run.  It was written in the days of the
Classic, before RISC, which is why it doesn't produce NMPRG files.
It was sold by Tymlabs, until Cognos stepped in.  I don't remember the
details, but I think Cognos sued, saying that any Quiz source code was
covered by their copyright, or something like that.  It never made sense to
me, or to some other people, but Cognos has much deeper pockets than
Tymlabs, so PDQ was taken off the market.  Since then, Tymlabs has been
sold to someone else, who was in turn sold to someone else, and so on.

One of my clients has PDQ version 2.42, which I think is the last version that
was released commercially.  It cannot handle new versions of Quiz, of course,
or at least source code that uses features that were added since the last
release of PDQ.  My client runs Quiz 7.09E, and allows only Quiz code
compiled with PDQ to run on the production machine, for performance reasons.
This company has the QDDR option for Quiz, which allowed Quiz to use
Dictionary/3000 instead of QSCHEMAC.  PDQ defaults to using QSCHEMAC,
and uses Dictionary/3000 only if there is no QSCHEMAC file.  No, it can't use
the new Powerhouse dictionary; that was invented later.

Cecile Chi