The work I've done where particular points in the file must be located has
used marks, not labels. Marks allows you to put points wherever you like
(and we do tend to identify start and stop of segments). As far as I
remember, we were advised to use marks instead of labels for this reason
by Entropic, but it was so long ago I can't be sure.
More authoritative answers may be obtained from Andrew Slater or Noel
Nguyen, both of whom are probably happy to advise.
Andrew Slater <andrew.slater@phonetics.oxford.ac.uk>,
Noel Nguyen <nnguyen@fapse.unige.ch>
Sarah
______________________________________________________________________
Dr. Sarah Hawkins Email: sh110@cam.ac.uk
Dept. of Linguistics Phone: +44 1223 33 50 52
University of Cambridge Fax: +44 1223 33 50 53
Sidgwick Avenue or +44 1223 33 50 62
Cambridge CB3 9DA
United Kingdom