- Add an entry for POLA, copied from the FAQ.

- Add a missing </glossdiv>.

Text reviewed by:	ceri, brueffer

en_US.ISO8859-1/share/sgml/glossary/freebsd-glossary.sgml

@@ -56,6 +56,7 @@
       <glossterm>KSE</glossterm>
       <glosssee otherterm="kse">
     </glossentry>
+  </glossdiv>
 
   <glossdiv>
     <title>M</title>
@@ -93,5 +94,27 @@
 
   </glossdiv>
 
+  <glossdiv>
+    <title>P</title>
+
+    <glossentry id="pola">
+      <glossterm>Principle Of Least Astonishment</glossterm>
+      <acronym>POLA</acronym>
+      <glossdef>
+	<para>As &os; evolves, changes visible to the user should be
+	  kept as unsurprising as possible.  For example, arbitrarily
+	  rearranging system startup variables in
+	  <filename>/etc/defaults/rc.conf</filename> violates
+	  <acronym>POLA</acronym>.  Developers consider
+	  <acronym>POLA</acronym> when contemplating user-visible
+	  system changes.</para>
+      </glossdef>
+    </glossentry>
+
+    <glossentry>
+      <glossterm>POLA</glossterm>
+      <glosssee otherterm="pola">
+    </glossentry>
+  </glossdiv>
 </glossary>