diff --git a/en_US.ISO8859-1/books/fdp-primer/po-translations/chapter.xml b/en_US.ISO8859-1/books/fdp-primer/po-translations/chapter.xml
index f797f6b5c7..52ab4496de 100644
--- a/en_US.ISO8859-1/books/fdp-primer/po-translations/chapter.xml
+++ b/en_US.ISO8859-1/books/fdp-primer/po-translations/chapter.xml
@@ -794,7 +794,9 @@ A         es_ES.po</screen>
 	<para>These files must also have the
 	  <application>Subversion</application>
 	  <literal>svn:keywords</literal> property set to
-	  <literal>FreeBSD=%H</literal>:</para>
+	  <literal>FreeBSD=%H</literal> so
+	  <literal>$FreeBSD$</literal> strings are expanded into
+	  the path, revision, date, and author when committed:</para>
 
 	<screen>&prompt.user; <userinput>svn propset svn:keywords FreeBSD=%H Makefile article.xml es_ES.po</userinput>
 property 'svn:keywords' set on 'Makefile'