Use [b]…[end] for bold text:

The most [b]important[end] consideration is this...

The above produces this…

Use [i]…[end] for italic text:

The most [i]important[end] consideration is this...

The above produces this…

Use [u]…[end] for underlined text:

The most [u]important[end] consideration is this...

The above produces this…

Use [s]…[end] for strikeout text:

The most [s]important[end] trivial consideration is this...

The above produces this…

Use [m]…[end] for monospace text (in a shaded background):

Use the [m]Writeln[end] function to produce output...

The above produces this…

Use [tt]…[end] for monspace (without the shaded background):

The most [tt]important[end] consideration is this...

The above produces this…

Use [kw]…[end] to format as a keyword:

You should consider using a [kw]while[end] loop...

The above produces this…

Use [kbd]…[end] for computer keycaps:

[kbd][&#8679] Shift[end]+[kbd]F7[end] and [kbd][&#8997] Alt[end]+[kbd]X[end] and [kbd]^ Ctrl[end]+[kbd]Q[end] [kbd][&crarr] Enter[end] and [kbd]Tab [&#8633][end] and [kbd][&#9003] Backspace[end] and [kbd][&#8682] Caps Lock[end]

The above produces this…

Use [kbd/ ...] for common keycaps with associated symbols:

Sage's Help Insight, ^ Ctrl+Space, offers suggestions from the above table.

You can also use [kbd/ ...] for longer key sequences. For example, instead of…

[kbd/ Shift] + [kbd/ Ctrl] + [kbd]F11[end]

You can do this…

[kbd/ Shift + Ctrl + F11]

Both of the above examples produce the same HTML…

The following characters serve as punctuation:

• +
• ,
• _ (denotes a non-breaking space)
• whitespace

These characters will appear outside keycaps, as shown in the preceding example. To work around this, simply quote these characters…

Press [kbd/ Alt+','] or [kbd/ Shift+Q, X].

The above produces…

Along similar lines, you need to quote square brackets, single-quotes, and double-quotes.

Unlike other tags, [kbd/] honors all spaces. For example, in a [pre] block, these two are visibly different:

[kbd/ Shift + F11] [kbd/ Shift + F11]

Leading and trailing whitespace is ignored, however.

Use [hl]…[end] to highlight text:

The most [hl]important[end] consideration is this...

The above produces this…

Use [abbr]…[end] to make a tool-tip explaining the meaning of a word or phrase:

[abbr "This is an example"]Example[end] (hover the mouse over the word)

The above produces this…

If you find it awkward to place the fly-over hint first, followed by the actual visible text, use this alternative notation…

[abbr]Example[note]This is another example[end] (hover the mouse over the word)

The above produces this…

Although the text after [note] cannot contain formatting (bold, italics, links, etc), it may contain character entities, for example…

To prove that a number is [abbr]transcendental[note]not the root of a non-zero [\] polynomial of finite degree with rational coefficients, [\] such as [&pi] and e[end], [...]

The above produces this…

Above, we're using [&pi] in the fly-over hint, which isn't possible using the earlier syntax.

Also, note the use of [\] tags – without these, we would have the following…

This oddness stems from the fact that, in HTML, the fly-over hint for an abbr tag is placed in an HTML attribute, where line breaks are significant.

Use [^]…[end] or [sup]…[end] for superscript:

X[^]e[end]

The above produces…

Use [v]…[end] or [sub]…[end] for subscript:

X[v]e[end]

The above produces…

Use [+1]…[end], [+2]…[end], or [+3]…[end] to increase font size:

0 [+1]+1[end] [+2]+2[end] [+3]+3[end]

The above produces…

Use [-1]…[end], [-2]…[end], or [-3]…[end] to decrease font size:

0 [-1]-1[end] [-2]-2[end] [-3]-3[end]

The above produces…

Note that Font Size tags are additive: a [+2] tag is equivalent to a [+1] tag that is nested in another [+1] tag. Similarly, a [-1] tag is equivalent to a [+2] tag that is nested in a [-3] tag.