Any combination of:

• Text, numbers, or special characters

• <alt-text> Alternate Text Name (For a Figure, etc.)

• <long-desc> Long Description

• <email> Email Address

• <ext-link> External Link

• <uri> Uniform Resource Indicator (URI)

• <break> Line Break

• <bold> Bold

• <italic> Italic

• <monospace> Monospace Text (Typewriter Text)

• <overline> Overline

• <roman> Roman

• <sans-serif> Sans Serif

• <sc> Small Caps

• <strike> Strike Through

• <underline> Underline

• <object-id> Object Identifier

• <def-list> Definition List

• <list> List

• <graphic> Graphic

• <media> Media Object

• <preformat> Preformatted Text

• <fn> Footnote

• <target> Target of an Internal Link

• <xref> X (cross) Reference

• <sub> Subscript

• <sup> Superscript