<p>A small mini series (three parts) on GNU Emacs; Klaatu tells you how to use it, when to use it and when not to, why you'd want to use it, and most of all - how to become a pro on it!  Not a sales pitch for Emacs, just a harmless introduction.  First try is free.</p>
<p>
<img src="https://www.gnu.org/software/emacs/tour/images/splash-small.png" alt="emacs logo" />
</p>
<p>GNU Emacs is an extensible, customizable text editor—and
more.  At its core is an interpreter for Emacs Lisp, a dialect of
the <a name="LispPointers" href="https://en.wikipedia.org/wiki/Lisp_programming_language"
id="LispPointers">Lisp programming language</a> with extensions to
support text editing.  The features of GNU Emacs include:</p>
<ul>
<li>Content-sensitive editing modes, including syntax coloring, for a
variety of file types including plain text, source code, and
HTML.</li>
<li>Complete built-in documentation, including a tutorial for new
users.</li>
<li>Full <a href="https://unicode.org">Unicode</a> support for nearly
all human languages and their scripts.</li>
<li>Highly customizable, using Emacs Lisp code or a graphical
interface.</li>
<li>A large number of extensions that add other functionality, including a <a href="https://www.gnu.org/software/emacs/manual/org.html">project planner</a>, <a href="https://www.gnu.org/software/emacs/manual/gnus.html">mail and news reader</a>, <a href="https://www.gnu.org/software/emacs/manual/html_node/emacs/Debuggers.html">debugger
interface</a>,
<a href="https://www.gnu.org/software/emacs/manual/html_node/emacs/Calendar_002fDiary.html">calendar</a>, and more. Many of these extensions are distributed with GNU Emacs; others are <a href="#Further">available separately</a>.</li>
</ul>
