Container element for equations or other mathematical expressions that are displayed together.
The following, in order:
<editing-instruction> Editing Instruction, zero or more
<label> Label of a Figure, Reference, Etc., zero or one
<caption> Caption of a Figure, Table, Etc., zero or one
<kwd-group> Keyword Group, zero or more
<subj-group> Subject Group, zero or more
Any combination of:
Standards Note and Example Elements
Any combination of:
Accessibility Elements
External Linking Elements
Any combination of: