Any combination of:

• Text, numbers, or special characters

• Accessibility Elements

  • <alt-text> Alternate Text Name (for a figure, etc.)

  • <long-desc> Long Description

• Linking Elements

  • <email> Email Address

  • <ext-link> External Link

  • <uri> Uniform Resource Identifier (URI)

• <break> Line Break

• Emphasis Elements

  • <bold> Bold

  • <fixed-case> Fixed Case

  • <italic> Italic

  • <monospace> Monospace Text (Typewriter Text)

  • <overline> Overline

  • <roman> Roman

  • <sans-serif> Sans Serif

  • <sc> Small Caps

  • <strike> Strike Through

  • <underline> Underline

  • <ruby> Ruby Annotation Wrapper

• Ownership Elements

  • <attrib> Attribution

  • <permissions> Permissions

• <alternatives> Alternatives For Processing

• Inline Display Elements

  • <inline-graphic> Graphic, Inline

• <chem-struct> Chemical Structure (Display)

• <inline-formula> Formula, Inline

• <label> Label (of an Equation, Figure, Reference, etc.)

• Math Element

  • <mml:math> Math (MathML Tag Set)

• <code> Code

• <graphic> Graphic

• <media> Media Object

• <preformat> Preformatted Text

• Baseline Change Elements

  • <sub> Subscript

  • <sup> Superscript