Author-it [was: Single Sourcing tools]

[M. Palmieri]

Hello,

Author-it’s knowledge center has detailed instructions
about duplicating a book to maintain documentation for
multiple, concurrent versions of software: 

http://www.author-it.com/kc/index.mv?9149 

For topics that need to change in the new release, you
can either embed existing content and add to it, or if
the information requires extensive changes, you can
create a new topic.

The other topics are the same in both books.

Regards,
Marie