Text Formatting.

Put carets on either side of the text to be superscripted, put tildes on either side of text to be subscripted. For example, the following line:

e^{amp}#960;i^+1 = 0. H~2~O and x^10^. Some ^super text^
and ~some sub text~

Is rendered like:

e^πi+1 = 0. H₂O and x¹⁰. Some ^{super text} and _{some sub text}

If you want to display caret (^) or tilde (~) characters you need to ensure only one per line otherwise they'll be misinterpreted as superscripting and subscripting.

A plus character preceded by at least one space character at the end of a line forces a line break. It generates an HTML line break (<br />) tag. Line breaks are ignored when outputting to DocBook since it has no line break element.

emphasized text (normally italics) bold text (boldface font) monospaced text (proportional font)

A line of three or more apostrophe characters will generate an HTML ruler (<hr />) tag. Ignored when generating non-HTML output formats.