Register customization for backmatter page numbers

[Rik <rik@panix.com>]

List,

I have a book with frontmatter, bodymatter, and backmatter. The 
frontmatter is pagenumbered with lc roman, and the bodymatter and 
backmatter are numbered, all by block.

The backmatter contain a glossary, pagenotes, bibliography, and an 
index. In addition to the frontmatter and the bodymatter, both the 
glossary and the pagenotes contain items that are indexed.

I need to distinguish pagenumbers that appear in the index so that the 
reader can identify where in the book the page is located. For the 
frontmatter, that is not a problem. For items that appear in the 
bodymatter or backmatter, however, page numbers are not unique.

One method that has been suggested is to prefix the pagenumber displayed 
in the index with a mark to indicate that the page is in the backmatter, 
or to italicize it, or to use an alternate font. I have looked at the 
defineconversionset and defineprocessor documentation and find no way to 
mark index entries appropriately.

Can anyone suggest a way to do this, or some other method? Perhaps a 
pagecommand that compares the register item real page number to the 
highest real page number of the body? I would prefer a solution that 
does not require changing the register commands (\index) in the text.

Continuous numbering across the frontmatter, bodymatter, and backmatter 
is not wanted, although as a last resort I might be able to argue for 
continuous numbering in the bodymatter and backmatter.

-- 
Rik Kabel


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