Clean up the PF section on loading kernel modules.

- Give specific clear examples on how to load the pf module and the pflog module.
- Remove some information that is stated in the section right above.
- Update the doc to reflect that pflog is now its own module. [1]

PR:		140896 [1]

en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml

@@ -236,20 +236,25 @@
 	url="http://pf4freebsd.love2party.net/"></ulink>.</para>
 
     <sect2>
-      <title>Using the PF loadable kernel module</title>
+      <title>Using the PF loadable kernel modules</title>
 
-      <para>Since the release of &os;&nbsp;5.3, PF has been included in the
-	basic install as a separate run time loadable module.  The
-	system will dynamically load the PF kernel module when the
-	&man.rc.conf.5; statement <literal>pf_enable="YES"</literal>
-	is present.  However, the <acronym>PF</acronym> module will
-	not be loaded if the system cannot find a <acronym>PF</acronym>
-	ruleset configuration file.  The default location is
-	<filename>/etc/pf.conf</filename>.  If your
-	<acronym>PF</acronym> ruleset is located somewhere else put
-	<literal>pf_rules="<replaceable>/path/pf.rules</replaceable>"</literal>
-	to your <filename>/etc/rc.conf</filename> configuration file to
-	specify the location.</para>
+        <para>To load the PF Kernel Module add the following line to
+	  <filename>/etc/rc.conf</filename>:</para>
+
+        <programlisting>pf_enable="YES"</programlisting>
+
+        <para>Then run the startup script to load the module:</para>
+
+        <screen>&prompt.root; <userinput>/etc/rc.d/pf start</userinput></screen>
+
+	<para>Note that the PF Module will not load if it cannot find
+	  the ruleset config file.  The default location is
+	  <filename>/etc/pf.conf</filename>.  If the PF ruleset is
+	  located somewhere else, PF can be instructed to look there by
+	  adding a line like the following to
+	  <filename>/etc/rc.conf</filename>:</para>
+
+        <programlisting>pf_rules="<replaceable>/path/to/pf.conf</replaceable>"</programlisting>
 
 	<note>
 	  <para>As of &os;&nbsp;7.0 the sample <filename>pf.conf</filename>
@@ -261,14 +266,22 @@
 	</note>
 
       <para>The <acronym>PF</acronym> module can also be loaded manually
-	from the command line:</para>
+  	from the command line:</para>
 
       <screen>&prompt.root; <userinput>kldload pf.ko</userinput></screen>
 
-      <para>The loadable module was created with &man.pflog.4; enabled
-	which provides support for logging.  If you need other
-	<acronym>PF</acronym> features you will need to compile
-	<acronym>PF</acronym> support into the kernel.</para>
+      <para>Logging support for PF is provided by the
+        <literal>pflog.ko</literal> and can be loaded by adding the
+	following line to <filename>/etc/rc.conf</filename>:</para>
+
+      <programlisting>pflog_enable="YES"</programlisting>
+
+      <para>Then run the startup script to load the module:</para>
+
+      <screen>&prompt.root; <userinput>/etc/rc.d/pflog start</userinput></screen>
+
+      <para>If you need other <acronym>PF</acronym> features you will
+        need to compile <acronym>PF</acronym> support into the kernel.</para>
     </sect2>
 
     <sect2>