We have Word 2003 and an application that stores/rebuilds a Word document
as/from a bunch of xml topics stored in a DB. Each topic starts with a H1,
H2, or H3 heading. Each topic is automatically assigned a unique ID and when
a topic is pulled back into Word from the DB, its ID is automatically
inserted as a bookmark in the topic title. This is not ideal because the end
user can easily and accidentally delete the bookmark thus preventing the
topic from being saved back to the DB in the right place. Being Word 2003, we
can protect the heading from editing, but this is too radical because
headings do need to be modified.

What we need is somewhere in the Word ML where we can insert a topic ID that
is in a hidden and non-editable part of the topic. Any suggestions?