+You can always type “<span class="quote">?</span>” in any menu to display the current bindings.
+</p><p>
+The first thing you need to do is invoke Mutt, simply by typing <code class="literal">mutt</code>
+at the command line. There are various command-line options, see
+either the Mutt man page or the <a class="link" href="reference.html#commandline" title="1. Command-Line Options">reference</a>.
+</p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="core-concepts"></a>1. Core Concepts</h2></div></div></div><p>
+Mutt is a text-based application which interacts with users through
+different menus which are mostly line-/entry-based or page-based. A
+line-based menu is the so-called “<span class="quote">index</span>” menu (listing all messages of
+the currently opened folder) or the “<span class="quote">alias</span>” menu (allowing you to
+select recipients from a list). Examples for page-based menus are the
+“<span class="quote">pager</span>” (showing one message at a time) or the “<span class="quote">help</span>” menu listing
+all available key bindings.
+</p><p>
+The user interface consists of a context sensitive help line at the top,
+the menu's contents followed by a context sensitive status line and
+finally the command line. The command line is used to display
+informational and error messages as well as for prompts and for entering
+interactive commands.
+</p><p>
+Mutt is configured through variables which, if the user wants to
+permanently use a non-default value, are written to configuration
+files. Mutt supports a rich config file syntax to make even complex
+configuration files readable and commentable.
+</p><p>
+Because Mutt allows for customizing almost all key bindings, there are
+so-called “<span class="quote">functions</span>” which can be executed manually (using the
+command line) or in macros. Macros allow the user to bind a sequence of
+commands to a single key or a short key sequence instead of repeating a
+sequence of actions over and over.
+</p><p>
+Many commands (such as saving or copying a message to another folder)
+can be applied to a single message or a set of messages (so-called
+“<span class="quote">tagged</span>” messages). To help selecting messages, Mutt provides a rich
+set of message patterns (such as recipients, sender, body contents, date
+sent/received, etc.) which can be combined into complex expressions
+using the boolean <span class="emphasis"><em>and</em></span> and <span class="emphasis"><em>or</em></span>
+operations as well as negating. These patterns can also be used to (for
+example) search for messages or to limit the index to show only matching
+messages.
+</p><p>
+Mutt supports a “<span class="quote">hook</span>” concept which allows the user to execute
+arbitrary configuration commands and functions in certain situations
+such as entering a folder, starting a new message or replying to an
+existing one. These hooks can be used to highly customize Mutt's
+behaviour including managing multiple identities, customizing the
+display for a folder or even implementing auto-archiving based on a
+per-folder basis and much more.
+</p><p>
+Besides an interactive mode, Mutt can also be used as a command-line
+tool only send messages. It also supports a
+<code class="literal">mailx(1)</code>-compatible interface, see <a class="xref" href="reference.html#tab-commandline-options" title="Table 9.1. Command line options">Table 9.1, “Command line options”</a> for a complete list of command-line
+options.
+</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="concept-screens-and-menus"></a>2. Screens and Menus</h2></div></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-index"></a>2.1. Index</h3></div></div></div><p>
+The index is the screen that you usually see first when you start
+Mutt. It gives an overview over your emails in the currently opened
+mailbox. By default, this is your system mailbox. The information you
+see in the index is a list of emails, each with its number on the left,
+its flags (new email, important email, email that has been forwarded or
+replied to, tagged email, ...), the date when email was sent, its
+sender, the email size, and the subject. Additionally, the index also
+shows thread hierarchies: when you reply to an email, and the other
+person replies back, you can see the other's person email in a
+"sub-tree" below. This is especially useful for personal email between
+a group of people or when you've subscribed to mailing lists.
+</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-pager"></a>2.2. Pager</h3></div></div></div><p>
+The pager is responsible for showing the email content. On the top of
+the pager you have an overview over the most important email headers
+like the sender, the recipient, the subject, and much more
+information. How much information you actually see depends on your
+configuration, which we'll describe below.
+</p><p>
+Below the headers, you see the email body which usually contains the
+message. If the email contains any attachments, you will see more
+information about them below the email body, or, if the attachments are
+text files, you can view them directly in the pager.
+</p><p>
+To give the user a good overview, it is possible to configure Mutt to
+show different things in the pager with different colors. Virtually
+everything that can be described with a regular expression can be
+colored, e.g. URLs, email addresses or smileys.
+</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-browser"></a>2.3. File Browser</h3></div></div></div><p>
+The file browser is the interface to the local or remote file
+system. When selecting a mailbox to open, the browser allows custom
+sorting of items, limiting the items shown by a regular expression and a
+freely adjustable format of what to display in which way. It also allows
+for easy navigation through the file system when selecting file(s) to
+attach to a message, select multiple files to attach and many more.
+</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-help"></a>2.4. Help</h3></div></div></div><p>
+The help screen is meant to offer a quick help to the user. It lists the
+current configuration of key bindings and their associated commands
+including a short description, and currently unbound functions that
+still need to be associated with a key binding (or alternatively, they
+can be called via the Mutt command prompt).
+</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-compose"></a>2.5. Compose Menu</h3></div></div></div><p>
+The compose menu features a split screen containing the information
+which really matter before actually sending a message by mail: who gets
+the message as what (recipients and who gets what kind of
+copy). Additionally, users may set security options like deciding
+whether to sign, encrypt or sign and encrypt a message with/for what
+keys. Also, it's used to attach messages, to re-edit any attachment
+including the message itself.
+</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-alias"></a>2.6. Alias Menu</h3></div></div></div><p>
+The alias menu is used to help users finding the recipients of
+messages. For users who need to contact many people, there's no need to
+remember addresses or names completely because it allows for searching,
+too. The alias mechanism and thus the alias menu also features grouping
+several addresses by a shorter nickname, the actual alias, so that users
+don't have to select each single recipient manually.
+</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="intro-attach"></a>2.7. Attachment Menu</h3></div></div></div><p>
+As will be later discussed in detail, Mutt features a good and stable
+MIME implementation, that is, it supports sending and receiving messages
+of arbitrary MIME types. The attachment menu displays a message's
+structure in detail: what content parts are attached to which parent
+part (which gives a true tree structure), which type is of what type and
+what size. Single parts may saved, deleted or modified to offer great
+and easy access to message's internals.
+</p></div></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="menus"></a>3. Moving Around in Menus</h2></div></div></div><p>
+The most important navigation keys common to line- or entry-based menus
+are shown in <a class="xref" href="gettingstarted.html#tab-keys-nav-line" title="Table 2.1. Most common navigation keys in entry-based menus">Table 2.1, “Most common navigation keys in entry-based menus”</a> and in
+<a class="xref" href="gettingstarted.html#tab-keys-nav-page" title="Table 2.2. Most common navigation keys in page-based menus">Table 2.2, “Most common navigation keys in page-based menus”</a> for page-based menus.
+</p><div class="table"><a id="tab-keys-nav-line"></a><p class="title"><b>Table 2.1. Most common navigation keys in entry-based menus</b></p><div class="table-contents"><table summary="Most common navigation keys in entry-based menus" border="1"><colgroup><col /><col /><col /></colgroup><thead><tr><th>Key</th><th>Function</th><th>Description</th></tr></thead><tbody><tr><td>j or <Down></td><td><code class="literal"><next-entry></code></td><td>move to the next entry</td></tr><tr><td>k or <Up></td><td><code class="literal"><previous-entry></code></td><td>move to the previous entry</td></tr><tr><td>z or <PageDn></td><td><code class="literal"><page-down></code></td><td>go to the next page</td></tr><tr><td>Z or <PageUp></td><td><code class="literal"><page-up></code></td><td>go to the previous page</td></tr><tr><td>= or <Home></td><td><code class="literal"><first-entry></code></td><td>jump to the first entry</td></tr><tr><td>* or <End></td><td><code class="literal"><last-entry></code></td><td>jump to the last entry</td></tr><tr><td>q</td><td><code class="literal"><quit></code></td><td>exit the current menu</td></tr><tr><td>?</td><td><code class="literal"><help></code></td><td>list all keybindings for the current menu</td></tr></tbody></table></div></div><br class="table-break" /><div class="table"><a id="tab-keys-nav-page"></a><p class="title"><b>Table 2.2. Most common navigation keys in page-based menus</b></p><div class="table-contents"><table summary="Most common navigation keys in page-based menus" border="1"><colgroup><col /><col /><col /></colgroup><thead><tr><th>Key</th><th>Function</th><th>Description</th></tr></thead><tbody><tr><td>J or <Return></td><td><code class="literal"><next-line></code></td><td>scroll down one line</td></tr><tr><td><Backspace></td><td><code class="literal"><previous-line></code></td><td>sroll up one line</td></tr><tr><td>K, <Space> or <PageDn></td><td><code class="literal"><next-page></code></td><td>move to the next page</td></tr><tr><td>- or <PageUp></td><td><code class="literal"><previous-page></code></td><td>move the previous page</td></tr><tr><td><Home></td><td><code class="literal"><top></code></td><td>move to the top</td></tr><tr><td><End></td><td><code class="literal"><bottom></code></td><td>move to the bottom</td></tr></tbody></table></div></div><br class="table-break" /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="editing"></a>4. Editing Input Fields</h2></div></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="editing-intro"></a>4.1. Introduction</h3></div></div></div><p>