- Document how to reconfigure a port

PR:		docs/116068
Submitted by:	Chess Griffin <chess.griffin@gmail.com>

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

@@ -1117,6 +1117,26 @@ ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/distfiles/ fetch</userinput></screen>
 	  job.</para>
 
       </sect3>
+
+      <sect3>
+	<title>Reconfiguring Ports</title>
+
+	<para>When building certain ports, you may be presented with a
+	  ncurses-based menu from which you can select certain build options.
+	  It is not uncommon for users to wish to revisit this menu to add,
+	  remove, or change these options after a port has been built.  There
+	  are many ways to do this.  One option is to go into the directory
+	  containing the port and type <command>make</command>
+	  <maketarget>config</maketarget>, which will simply present the menu
+	  again with the same options selected.  Another option is to use
+	  <command>make</command> <maketarget>showconfig</maketarget> which
+	  will show you all the configuration options for the port.  Yet
+	  another option is to execute <command>make</command>
+	  <maketarget>rmconfig</maketarget> which will remove all selected
+	  options and allow you to start over.  All of these options, and
+	  others, are explained in great detail in in the man page for
+	  &man.ports.7;.</para>
+      </sect3>
     </sect2>
 
     <sect2 id="ports-removing">