The
tbx:crossReference element is a hyperlinking element
that points to the location of another term, usually a
related term (including antonyms and homonyms). The
element content contains the display text of the link.
This element will be prepended with the label Related
term: in the rendered output.
Do not use a
formulation such as "Note: See xxx" for a
cross-reference to another term.
A crossReference cannot be embedded into a definition or
an example. For that purpose, use entailedTerm.
The target attribute is optional for crossReference, and
mandatory for externalCrossReference.
This data category is repeatable; you can include as many
as you want in an entry.
A crossReference can only occur at the langSet level,
whereas an externalCrossReference can occur at either
the langSet or the termEntry level.