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(emacs)Fortran

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Fortran Mode
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   Fortran mode provides special motion commands for Fortran statements
and subprograms, and indentation commands that understand Fortran
conventions of nesting, line numbers and continuation statements.
Fortran mode has its own Auto Fill mode that breaks long lines into
proper Fortran continuation lines.

   Special commands for comments are provided because Fortran comments
are unlike those of other languages.  Built-in abbrevs optionally save
typing when you insert Fortran keywords.

   Use `M-x fortran-mode' to switch to this major mode.  This command
runs the hook `fortran-mode-hook' (Note: Hooks).

   Fortan mode is meant for editing Fortran77 "fixed format" source
code.  For editing the modern Fortran90 "free format" source code, use
F90 mode (`f90-mode').  Emacs normally uses Fortran mode for files with
extension `.f', `.F' or `.for', and F90 mode for the extension `.f90'.
GNU Fortran supports both kinds of format.

Motion

Fortran Motion. Moving point by statements or subprograms.

Indent

Fortran Indent. Indentation commands for Fortran.

Comments

Fortran Comments. Inserting and aligning comments.

Autofill

Fortran Autofill. Auto fill minor mode for Fortran.

Columns

Fortran Columns. Measuring columns for valid Fortran.

Abbrev

Fortran Abbrev. Built-in abbrevs for Fortran keywords.