Good RPM documention

Good documentation for maintaining/creating Linux RPMs is difficult to find. This Wraptastic site seems to have so good stuff:

http://wraptastic.org

It appears official, but it’s hard to say since the site seems to lack an “about” to key off of.

In a related line, these two RedHat sites seem to have copies of the “Maximum RPM” book in electronic format:

• http://www.redhat.com/docs/books/max-rpm/index.html
• http://www.rpm.org/max-rpm

I have an older printed version and it goes a long way, but not quite enough, to figure out how RPMs work.