Agreed. But it's Allen who has to maintain it. (Or is it the users?) Plus, having Tobi on your site and his wilingness to support it is very nice indeed. I envision a fully loaded Hieraki and Tobi creating a "Publish to PDF" button. There you go, a full-fledged manual to be distributed with the application, chapters and all.
Publish to PDF is the most requested feature indeed. I haven't touched it becuase pdf export is still on the agenda of the ruby textile library which hieraki uses. The author is a real wiz and would be able to do a much better job than I.
That being said I added textile and one page html export to hieraki recently. With a bit of apple script i'm sure there would be an good way to print to pdf the exported html.
-- Tobi http://www.snowdevil.ca - Snowboards that don't suck http://www.hieraki.org - Open source book authoring http://blog.leetsoft.com - Technical weblog