VOTable is meant to serialize tabular documents in the context of Virtual Observatory applications. This schema corresponds to the VOTable document available from http://www.ivoa.net/Documents/latest/VOT.html Accept UCD1+ Accept also old UCD1 (but not / + %) including SIAP convention (with :) content-role was previsouly restricted as: ]]>; is now a token. Deprecated in Version 1.2 Deprecated in Version 1.1 MUST be provided if the PARAM is part of a GROUP that has a VO-DML element. The VO-DML annotation MUST in that case identify a VO-DML Role (be it as attribute or as element). For other possible rules see the "mapping document". MUST be provided if the FIELDref is part of a GROUP that has a VO-DML element. The VO-DML annotation MUST in that case identify a VO-DML Role (be it as attribute or as element). For other possible rules see the "mapping document". MUST be provided if the PARAMref is part of a GROUP that has a VO-DML element. The VO-DML annotation MUST in that case identify a VO-DML Role (be it as attribute or as element). For other possible rules see the "mapping document". Added in Version 1.2: INFO for diagnostics The 'encoding' attribute is added here to avoid problems of code generators which do not properly interpret the TR/TD structures. 'encoding' was chosen because it appears in appendix A.5 The ID attribute is added here to the TR tag to avoid problems of code generators which do not properly interpret the TR/TD structures Added in Version 1.2: INFO for diagnostics Added in Version 1.2: INFO for diagnostics in several places The valid format of a reference to a VO-DML element. (Used to be 'UTYPE'). MUST have a prefix that elsewhere in the VOTable is defined to correspond to a VO-DML model defining the referenced element. See "mapping document", https://volute.googlecode.com/svn/trunk/projects/dm/vo-dml/doc/UTYPEs-WD-v1.0.pdf. Suffix, separated from the prefix by a ':', MUST correspond to the vodml-id of the referenced element in the VO-DML/XML representation of that model. Identifies an alternative type for the element containing the annotation. MAY be specified if the vodml-type attribute is set. In that case MUST reference a super type of the VO-DML type identified by that attribute. There may be more rules associated to this, see the "mapping document". MUST be provided on annotations of FIELDref and PARAMref and on GROUP and PARAM if these are contained in a VO-DML annotated GROUP. If not provided on a root GROUP, indicates that it represents a stand-alone object and then the vodml-type MUST be available. MUST reference the exact VO-DML type of the instance represented by the container of the VODMLAnnotation element. Q: should use="required"?