Textual unit or block; a textual paragraph.
Any combination of:
Text, numbers, or special characters
<email> Email Address
<ext-link> External Link
<uri> Uniform Resource Indicator (URI)
<inline-supplementary-material> Inline Supplementary Material
<related-article> Related Article Information
<related-object> Related Object Information
<address> Address/Contact Information
<alternatives> Alternatives For Processing
<array> Array (Simple Tabulation)
<boxed-text> Boxed Text
<chem-struct-wrap> Chemical Structure Wrapper
<fig> Figure
<fig-group> Figure Group
<graphic> Graphic
<media> Media Object
<preformat> Preformatted Text
<supplementary-material> Supplementary Material
<table-wrap> Table Wrapper
<table-wrap-group> Table Wrapper Group
<disp-formula> Formula, Display
<disp-formula-group> Formula, Display Group
<element-citation> Element Citation
<mixed-citation> Mixed Citation
<nlm-citation> NLM Citation
<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
<award-id> Award Identifier
<funding-source> Funding Source
<open-access> Open Access
<chem-struct> Chemical Structure (Display)
<inline-formula> Formula, Inline
<inline-graphic> Graphic, Inline
<private-char> Private Character (Custom or Unicode™)
<def-list> Definition List
<list> List
<tex-math> TeX Math Equation
<mml:math> Math (MathML 2.0 Tag Set)
<abbrev> Abbreviation or Acronym
<milestone-end> Milestone End
<milestone-start> Milestone Start
<named-content> Named Special (Subject) Content
<styled-content> Styled Special (Subject) Content
<disp-quote> Quote, Displayed
<speech> Speech
<statement> Statement, Formal
<verse-group> Verse Form for Poetry
<fn> Footnote
<target> Target of an Internal Link
<xref> X (cross) Reference
<sub> Subscript
<sup> Superscript