On this page:
t
etc
PLane T
hash-lang
void-const
undefined-const
commandline
centerline
math
filebox
4.3.11 Miscellaneous

(t pre-content ...)  paragraph?
  pre-content : pre-content?
Wraps the decoded pre-content as a paragraph.

Like "etc.", but with an abbreviation-ending period for use in the middle of a sentence.

"PLaneT" (to help make sure you get the letters in the right case).

Returns an element for #lang that is hyperlinked to an explanation.

Returns an element for #<void>.

Returns an element for #<undefined>.

(commandline pre-content ...)  paragraph?
  pre-content : pre-content?
Produces an inset command-line example (e.g., in typewriter font).

(centerline pre-flow ...)  nested-flow?
  pre-flow : pre-flow?
An alias for centered for backward compatibility.

(math pre-content ...)  element?
  pre-content : any/c
The decoded pre-content is further transformed:

(filebox filename pre-flow ...)  block?
  filename : (or/c string? element?)
  pre-flow : pre-flow?
Typesets the pre-flows as the content of filename. For example, the content may be inset on the page with filename above it. If filename is a string, it is passed to "filepath" to obtain an element.