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+<div class="SECT1">
+<h1 class="SECT1"><a id="VI-CONFIGURATION" name="VI-CONFIGURATION">16.6 vi
+Configuration</a></h1>
+
+<p>Your <tt class="COMMAND">vi</tt> clone of choice can be configured in several
+ways.</p>
+
+<p>A variety of commands can be entered while in command mode to set up <tt
+class="COMMAND">vi</tt> just how you like it. Depending on your editor, you can enable
+features to make programming easier (like syntax hilighting, auto-indenting, and more),
+set up macros to automake tasks, enable textual substitutions, and more.</p>
+
+<p>Almost all of these commands can be put into a configuration file in your home
+directory. <tt class="COMMAND">elvis</tt> expects a <tt class="FILENAME">.exrc</tt> file,
+while <tt class="COMMAND">vim</tt> expects a <tt class="FILENAME">.vimrc</tt> file. Most
+of the setup commands that can be entered in command mode can be placed in the
+configuration file. This includes setup information, textual substitutions, macros, and
+more.</p>
+
+<p>Discussing all these options and the differences between the editors is quite an
+involved subject. For more information, check out the man page or web site for your
+preferred <tt class="COMMAND">vi</tt> editor. Some editors (like <tt
+class="COMMAND">vim</tt>) have extensive help within the editor that can be accessed with
+the <b class="KEYCAP">:help</b> command, or something similar. You can also check out the
+O'Reilly book <i class="CITETITLE">Learning the <tt class="COMMAND">vi</tt> Editor</i> by
+Lamb and Robbins.</p>
+
+<p>Many common programs in Linux will load up a text file in <tt class="COMMAND">vi</tt>
+by default. For example, editing your crontabs will start up <tt class="COMMAND">vi</tt>
+by default. If you do not like <tt class="COMMAND">vi</tt> and would like another editor
+to be started instead, all you need to do is set the <tt class="ENVAR">VISUAL</tt>
+environment variable to the editor you prefer. For information on setting environment
+variables, see the section called Environment Variables in Chapter 8. If you want to make
+sure that your editor will be the default every time you login, add the VISUAL setting to
+your <tt class="FILENAME">.bash_profile</tt> or <tt class="FILENAME">.bashrc</tt>
+files.</p>
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