Typographic elements

In this section:

1. b
   The bold (<b>) element is used to apply bold highlighting to the content of the element. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available. For example, for specific items such as GUI controls, use the <uicontrol> element.
2. i
   The italic (<i>) element is used to apply italic highlighting to the content of the element. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available. For example, for specific items such as variable names, use the <varname> element.
3. sup
   The superscript (<sup>) element indicates that text should be superscripted, or vertically raised in relationship to the surrounding text. Superscripts are usually a smaller font than the surrounding text. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available.
4. sub
   A subscript (<sub>) indicates that text should be subscripted, or placed lower in relationship to the surrounding text. Subscripted text is often a smaller font than the surrounding text. Formatting may vary depending on your output process. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available.
5. tt
   The teletype (<tt>) element is used to apply monospaced highlighting to the content of the element. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available. For example, for specific items such as inline code fragments, use the <codeph> element.
6. u
   The underline (<u>) element is used to apply underline highlighting to the content of the element. This element is part of the DITA highlighting domain. Use this element only when a more semantically appropriate element is not available. For example, for specific items such as GUI controls, use the <uicontrol> element.