coords
https://volute.g-vo.org/svn/trunk/projects/dm/STC/vo-dml/STC_coords-v2.0.vo-dml.xml
meas
https://volute.g-vo.org/svn/trunk/projects/dm/STC/vo-dml/STC_meas-v2.0.vo-dml.xml
_FK4_FRAME
With VO-DML annotation enabled, the TABLE content may be reduced to its simplest form or retain its "native" structure. Here we have reduced the content to a flat set of PARAM and FIELD elements."