I've been doing some more work trying to work out PBB syntax. You can see the fruits of my efforts at the updated Wiki page: http://wiki.logos.com/Personal_Books
I've tried to clarify the page, and added new information about creating links to other resources, which means it's now possible to create links without using Logos 3. The current implementation of PBB makes it easy to link to specific page numbers in other resources, but it's more difficult to link to headings. Here are examples of both, giving the syntax and the result:
[[(Hartley, 1988)|ref=page.476|res=LLS%3ANICOT18JOB]]
(Harley, 1988)
[[see Moses|pos=T0002602|res=LLS%3A14.0.10]]
see Moses
(The tricky thing in the latter case is finding the position. I explain how to do that on the Wiki.)