groff: Embedded Commands
5.5 Embedded Commands
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Most documents need more functionality beyond filling, adjusting and
implicit line breaking. In order to gain further functionality,
'gtroff' allows commands to be embedded into the text, in two ways.
The first is a "request" that takes up an entire line, and does some
large-scale operation (e.g. break lines, start new pages).
The other is an "escape" that can be usually embedded anywhere in the
text; most requests can accept it even as an argument. Escapes
generally do more minor operations like sub- and superscripts, print a
symbol, etc.
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groff: Identifiers
groff: gtroff Reference
groff: Registers