[topicmapmail] Subject Identifiers metadata

[Dan Corwin]

** Jan Algermissen replied 4/30 to Kal:

 > ... you cannot reify an identifier (if you stick to the current
 > TMDM) because the TMDM does not recognize identifiers as subjects.

According to this note in TMDM specs, it also does not recognize
topics themselves as being potential subjects:

[1]  http://www.isotopicmaps.org/sam/sam-model/#d0e898

Both of these seem obvious limitations of the TMDM spec, as they
directly contradict its own section 3.23 - a subject is:

  "anything whatsoever, regardless of whether it exists or has any other
   specific characteristics, about which anything whatsoever may be
   asserted by any means whatsoever. In particular, it is anything on
   which the creator of a topic map chooses to discourse."


** Steve Pepper wrote on 4/22:

 > Well, we had a 5-day meeting in Amsterdam last week and I am
 > pleased to report that many differences have now been overcome.
  ...
 > An overview of what came out of last week's meeting can be
 > gleaned from the WG3 recommendations, which will be posted
 > shortly (i.e., sometime before next Monday morning) at

[2]  http://www.jtc1sc34.org/repository/0505.htm


I looked in [2], but I could find no mention of Jan's issue of [1],
so I now have several pending questions besides Kal's original one:

Q1: Were these reification limits in TDMD in fact recently discussed?

Q2: Either way, does a consensus now exist on their resolution?

Q3: TMDM specs aside, could I in practice reify such things in XTM
     1.0, then safely expect all popular TM engines to handle it?

Regards,
Dan Corwin