I am writing a series of manuals with overlapping content. I would like to
edit the overlapping content in separate files and include them wherever they
apply. How would I do this?

Depending on which version of Word you have, you can create the
overlapping content in one or more separate files and then use
INCLUDE or INCLUDETEXT fields to insert the overlapping content
in the manual documents where you want the overlapping content
repeated.

AE wrote:

I am writing a series of manuals with overlapping content. I would like to
edit the overlapping content in separate files and include them wherever they
apply. How would I do this?