The following, in order:

• <label> Label of a Figure, Reference, Etc., zero or one

• <caption> Caption of a Figure, Table, Etc., zero or one

• <legend> Legend, zero or more

• <abstract> Abstract, zero or more

• <kwd-group> Keyword Group, zero or more

• <subj-group> Subject Group, zero or more

• Any combination of:

  • Accessibility Elements

    • <alt-text> Alternate Title Text For a Figure, Etc.

    • <long-desc> Long Description

  • External Linking Elements

    • <email> Email Address

    • <ext-link> External Link

    • <uri> Uniform Resource Identifier (URI)

• Any combination of:

  • <fig> Figure

  • <alternatives> Alternatives For Processing

  • <graphic> Graphic

  • <media> Media Object