Modes

The modes in Emacs act as both a formatting tool for a particular language as well as an environment in which to execute that language within Emacs.  

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emacs MODES

~ x text [ret]

Text.

~ x latex [ret]

LaTeX.

~ x tex-mode [ret]

TeX.

~ x fortran [ret]

Fortran.

~ x c-mode [ret]

C language.

~ x lisp-mode [ret]

Lisp.

~ x nroff [ret]

Nroff.

~ x auto-fill [ret]

Auto-fill.

~ x outline [ret]

Outline.

~ x overwrite [ret]

Overwrite (repeat to toggle).

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emacs TeX SUBCOMMANDS

``

Insert proper open/close quotes in TeX mode.

~ x validate-Tex

Finds unmatched braces {} and $.

~ {

Insert pair of braces with cursor in middle (Tex).

~ }

Move to right of }, used after above.