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LIST OF USEFUL EMACS COMMANDS
Author: Mauricio Esguerra
Date: November 2009
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M-x html-mode
Changes the syntax highlighting mode to the type you want, in this
case html. Other common modes are, latex-mode, java-mode, python-mode,
php-mode, c-mode, sql-mode.

M-x line-number-mode
Enable or disable the line number mode.

M-x column-number-mode
Enable or disable the column number mode.

M-x ediff
Activates the diff command inside emacs. If you want to switch the
display from "top/bottom" to "left/right" use the pipe command (|)