Emacs

GNU Emacs is a powerful, extensible, self-documenting text editor.

Installation
Explanation of USE Flags:
 * = enable X windows interface


 * = enable gtk interface


 * = enables support for displaying jpeg images (will only be useful if  is also enabled)


 * = support for png images (will probably want if you use DocView mode to read PDFs)


 * = support for gif images


 * = support for TrueType fonts (such as the Liberation family of fonts)

Configuration
You can customize Emacs by clicking through the GUI (use ) or with your   which's written in emacs-lisp, Emacs' own Lisp-dialect.

Documentation
For a quick-start documentation, type in Emacs: For further help on how to use Emacs, start  and type Control-h and then r.