Index: en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml
===================================================================
--- en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml
+++ en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml
@@ -2046,12 +2046,15 @@
 
   <sect1 xml:id="uses-mono">
     <title><literal>mono</literal></title>
+    <para>Possible arguments: (none), <literal>nuget</literal>,
+    <literal>build</literal></para>
 
-    <para>Possible arguments: (none), <literal>nuget</literal></para>
-
     <para>Adds a dependency on the <application>Mono</application>
       (currently only C#) framework by setting the appropriate
       dependencies.</para>
+
+    <para>Specify <literal>build</literal> when the port has only a build
+      time dependency on Mono.</para>
 
     <para>Specify <literal>nuget</literal> when the port uses nuget
       packages.  <varname>NUGET_DEPENDS</varname> needs to be set with