Container element for one set of keywords (<kwd>, <nested-kwd>, or <compound-kwd>) used to describe a document. A keyword records one specific term, key phrase, abbreviation, taxonomic structure, or other expression that is found within the text of a standards document, or implied (broader, narrower, etc.) from terms found within this text.
The following, in order:
<editing-instruction> Editing Instruction, zero or more
<label> Label of a Figure, Reference, Etc., zero or one
One or more of any of: