Add a section about acronyms to our style guide; based on what we

hashed out on doc@ and from the O'Reilly Style Guide.

en_US.ISO8859-1/books/fdp-primer/writing-style/chapter.sgml

@@ -176,6 +176,25 @@
 	<literal>&lt;!doctype&hellip;&gt;</literal>.</para>
     </sect2>
 
+    <sect2>
+      <title>Acronyms</title>
+
+      <para>Acronyms should generally be spelled out the first time
+	they appear in a book, as in: "Network Time Protocol (<acronym
+	role="Network Time Protocol">NTP</acronym>)." After the
+	acronym has been defined, you should generally use the acronym
+	only (not the whole term, unless it makes more sense
+	contextually to use the whole term). Usually, acronyms are
+	defined only one per book. But if you prefer, you can also
+	define them the first time they appear in each chapter.</para>
+
+      <para>The first three uses of an acronym should be enclosed in
+        &lt;acronym&gt; tags, with a <literal>role</literal> attribute
+        with the full term defined.  This allows a link to the
+        glossary to be created, and for mouseovers to be rendered with
+        the fully expanded term.</para>
+    </sect2>
+
     <sect2>
       <title>Indentation</title>