UTYPEs and UFIs

[Jonathan McDowell]

Dear DM team,
 I have prepared a note on my view of the role and syntax of UTYPEs
(data model field labels) and their relationship to what I call UFIs
(ways to describe/locate uniquely a piece of information in a DM instance),
to set things up for discussion in Cambridge.
 The doc is
  http://hea-www.harvard.edu/~jcm/vo/docs/utype/ut2.pdf

See you in the UK
 Jonathan McDowell