Add extra help to mosquitto.conf man page.

man/mosquitto.conf.5.xml

@@ -36,6 +36,40 @@
 		</para>
 	</refsect1>
 
+	<refsect1>
+		<title>Sections</title>
+		<para>
+			The rest of this man page is divided into the following sections:
+			<variablelist>
+				<varlistentry>
+					<term><option>File Format</option> a description of the configuration
+						file syntax.</term>
+				</varlistentry>
+				<varlistentry>
+					<term><option>Authentication</option> a discussion of the authentication
+						options available.</term>
+				</varlistentry>
+				<varlistentry>
+					<term><option>General Options</option> the general options for configuring
+						Mosquitto.</term>
+				</varlistentry>
+				<varlistentry>
+					<term><option>Listeners</option> general options for configuring listeners,
+						which are the ways that MQTT clients can connect to Mosquitto,
+						as well as certificate and pre-shared-key based SSL/TLS options.</term>
+				</varlistentry>
+				<varlistentry>
+					<term><option>Configuring Bridges</option> general options for configuring bridges,
+						which are a way of connecting multiple brokers together,
+						as well as certificate and pre-shared-key based SSL/TLS options.</term>
+				</varlistentry>
+				<varlistentry>
+					<term><option>Other</option> The Files, Bugs, See Also sections.</term>
+				</varlistentry>
+			</variablelist>
+		</para>
+	</refsect1>
+
 	<refsect1>
 		<title>File Format</title>
 		<para>All lines with a # as the very first character are treated as a