"Frankly, cross-references are a disappointment in
OpenOffice.org Writer. Several posters to the OpenOffice.org
mailing lists have referred to them as glorified bookmarks, and
they're not far off. Compared to other software designed for
writing long documents, Writer's cross-referencing tools are
lacking. To start with, Writer does not give you the option of
creating cross-references from headings. Instead, you have to add
the sources manually--exactly as you would a bookmark. To make
matters worse, cross-references between documents require kludges.
And, if that was not enough, Writer also lacks the building blocks
used by FrameMaker to create standard sentences and sentence
fragments that lead to cross-references..."