U.3 Indentation for Programs

The best way to keep a program properly indented is to use Emacs to reindent it as you change it. Emacs has commands to indent properly either a single line, a specified number of lines, or all of the lines inside a single parenthetical grouping.

U.3.1 Basic Program Indentation Commands		Indenting a single line.
U.3.2 Indenting Several Lines		Commands to reindent many lines at once.
U.3.3 Customizing Lisp Indentation		Specifying how each Lisp function should be indented.
U.3.4 Commands for C Indentation		Extra features for indenting C and related modes.
U.3.5 Customizing C Indentation		Controlling indentation style for C and related modes.

Emacs also provides a Lisp pretty-printer in the library pp. This program reformats a Lisp object with indentation chosen to look nice.