Troff - Text markup language

Troff is a text markup language created in 1973.

#508on PLDB

51Years Old

troff is the major component of a document processing system developed by AT&T Corporation for the Unix operating system. troff features commands to designate fonts, spacing, paragraphs, margins, footnotes and more. Unlike many other text formatters, troff can position characters arbitrarily on a page, even overlapping them, and has a fully programmable input language. Read more on Wikipedia...

Troff website
Troff Wikipedia page
Troff on HOPL
CodeMirror package for syntax highlighting Troff
See also: (9 related languages)Unix, BCPL, Assembly language, C, LaTeX, Scheme, Unicode, Tex, Scribe

Example from the Hello World Collection:

\"	"Hello, world!" in troff

Hello, world!