Index: en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml
===================================================================
--- en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml
+++ en_US.ISO8859-1/books/porters-handbook/porting-dads/chapter.xml
@@ -777,6 +815,15 @@
       &os;.</para>
   </sect1>
 
+  <sect1 xml:id="dads-reinplace">
+    <title><varname>REINPLACE</varname></title>
+
+    <para>When using <varname>REINPLACE</varname>, avoid using
+      comma as the delimitor character, as that is a legal character
+      for e.g. compiler arguments.  Suggested alternatives are
+      at-sign or pipe-character.</para>
+  </sect1>
+
   <sect1 xml:id="dads-misc">
     <title>Miscellanea</title>