This element indicates that the record is about a
particular subject category (or categories).
Users can use further keywords to either refine or
broaden their search (depending on the Boolean operators used).
Obligation
Conditional (at least one keyword must be present in
a M37 SUBJECT element).
Repeatable
Yes
NAA Metadata
No
Default Value
–
Attributes
Attribute Name/Type
Definition
vers:schemeCDATA
(Optional) A reference to the scheme that controls
the values of this element. Would normally only be present if there is a
published scheme that can be referred to by a viewer.
