🚀 go-pugleaf

Joan,

Those additional digits are added by FM depending upon the type of
marker and the file number (in the book file sequence) that the marker
is in. This assures uniqueness when valid identical newlink commands
in different files become dupes in the merged postscript file when
output for converting to PDF. If you want to seed targets for other
non-FM generated PDFs to link to these locations, then you'll have to
do some contortions using anchored *postscript* textframes with /DEST
pdfmark entries or figure out in advance which file in the book is
always going to be the destination and use the "Mxx.8.newlink." (where
xx is the file number sequence in the book) a prefix in the other
PDFs.

Alternatively, you can get a copy of Shlomo Perets' FM-to Acrobat
TimeSavers and make this a snap to do with his PDFmarker tool.