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Commands for Human Languages
The term "text" has two widespread meanings in our area of the
computer field. One is data that is a sequence of characters. Any file
that you edit with Emacs is text, in this sense of the word. The other
meaning is more restrictive: a sequence of characters in a human
language for humans to read (possibly after processing by a text
formatter), as opposed to a program or commands for a program.
Human languages have syntactic/stylistic conventions that can be
supported or used to advantage by editor commands: conventions involving
words, sentences, paragraphs, and capital letters. This chapter
describes Emacs commands for all of these things. There are also
commands for "filling", which means rearranging the lines of a
paragraph to be approximately equal in length. The commands for moving
over and killing words, sentences and paragraphs, while intended
primarily for editing text, are also often useful for editing programs.
Emacs has several major modes for editing human language text. If
the file contains text pure and simple, use Text mode, which customizes
Emacs in small ways for the syntactic conventions of text. For text
which contains embedded commands for text formatters, Emacs has other
major modes, each for a particular text formatter. Thus, for input to
TeX, you would use TeX mode; for input to nroff, Nroff mode.
- Moving over and killing words.
- Moving over and killing sentences.
- Moving over paragraphs.
- Moving over pages.
- Filling or justifying text.
- Changing the case of text.
- Text Mode
- The major modes for editing text files.
- Outline Mode
- The major mode for editing outlines.
- TeX Mode
- The major modes for editing input to the formatter TeX.
- Nroff Mode
- The major mode for editing input to the formatter nroff.
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