Thanks Helmut, that gives me the starting point I needed!

What I'm trying to do is create a table showing each citation to each of a
list of references and then bookmark the table and reference from that.  I
cannot simply use a SEQ number in the text because I don't want to index it
for multiple references to the same work.  The problem is that when I
bookmark and then reference, the numbering goes out of sequence if I move
text with the REF field.  

I was planning on continuous numbering to avoid the page/line issue;
now I'm looking at ambiguities of  locations within a given line.

I don't suppose MSW offers a "first use" function for bookmarks that could
be tested in an IF/THEN statement?

Thanks again.
Very Respectfully,
Larry