I want to thank folks for their thoughtful comments.

I clarified a few design points.

Most importantly, I added four new appendices. For Python programmers, I provided examples of unittest, doctest and epydoc. For Java programmers, I provided examples of JUnit and javadoc.

Don't ask why. I can't explain it without violating a Non-Disclosure Agreement.

However, check this out. Search for NMEA Checksum VB.

• http://www.experts-exchange.com/Databases/GIS_GPS/Q_21413235.html
• http://www.codepedia.com/1/Calculating+and+Validating+NMEA+Checksums
• http://www.codepedia.com/1/Taking+Out+the+Garbage:+NMEA+Checksums …

See the Electric Skateboard in XKCD. "You don't realize how much time you were spending on the boring parts until you don't have to do them anymore."

A helpful answer to "Why is Python so cool?" Fewer Boring Parts.

First, I wrote a book on Programming with Python. It was back in the Python 2.0 days (2001 or thereabouts.) I used AppleWorks, and it was fun. Write all you want, put in formulae, code samples, everything. A few style sheets to give it a reasonable look and I …

Kontrawize author Anthony Coates warns that this is an attractive time sink. Thanks for the heads up.

My first round of research found HTML Slidy , but didn't find DocUtils + S5 . S5 is simpler and does less than Slidy. RST markup is far easier to cope with than HTML. This looks …

PPT has one big advantage: it is written by the same people who wrote Windows. So it can seize the Windows display and keyboard, and take control over the entire UI. I happen to think that's A Bad Thing™ but I may be in the minority on that.

Of course …

I've been using the Apache FOP http://xmlgraphics.apache.org/fop/ to transform XSL:FO into PDF's. FOP works well enough for some DocBook processing, but it can't handle really complex stuff gracefully.

Can we also use this XSL:FO technology for producing PDF form letters as part of a …