diff --git a/en_US.ISO8859-1/books/porters-handbook/uses.xml b/en_US.ISO8859-1/books/porters-handbook/uses.xml
index 238d7ccaa3..7cef64171f 100644
--- a/en_US.ISO8859-1/books/porters-handbook/uses.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/uses.xml
@@ -275,10 +275,12 @@
     <literal>flags</literal>, <literal>bootstrap</literal></entry>
 
   <entry>
-    <para>Handle dependency on <application>Kerberos</application>
-      ports.  By default, or set to <literal>base</literal>,
-      <application>Kerberos</application> from the base system is
-      used.  Set to <literal>heimdal</literal> to use <package
+    <para>Handle dependencies needed by consumers of the
+      <acronym>GSS-API</acronym>.  Only libraries that provide the
+      <application>Kerberos</application> mechanism are available.
+      By default, or set to <literal>base</literal>,
+      the <acronym>GSS-API</acronym> library from the base system is used.
+      Can also be set to <literal>heimdal</literal> to use <package
 	role="port">security/heimdal</package>, or
       <literal>mit</literal> to use <package
 	role="port">security/krb5</package>.</para>
@@ -287,7 +289,8 @@
       installation is not in <varname>LOCALBASE</varname>, set
       <varname>HEIMDAL_HOME</varname> (for <literal>heimdal</literal>)
       or <varname>KRB5_HOME</varname> (for <literal>krb5</literal>) to
-      the base <application>Kerberos</application> directory.</para>
+      the location of the <application>Kerberos</application>
+      installation.</para>
 
     <para>These variables are exported for the ports to use:</para>
 
@@ -301,7 +304,7 @@
       <listitem><para><varname>GSSAPI_CONFIGURE_ARGS</varname></para></listitem>
     </itemizedlist>
 
-    <para>The <literal>flags</literal> option can be set with
+    <para>The <literal>flags</literal> option can be given alongside
       <literal>base</literal>, <literal>heimdal</literal>, or
       <literal>mit</literal> to automatically add
       <varname>GSSAPICPPFLAGS</varname>,
@@ -312,7 +315,7 @@
       <literal>base,flags</literal>.</para>
 
     <para>The <literal>bootstrap</literal> option is a special prefix
-      only for use with <package role="port">security/krb5</package>
+      only for use by <package role="port">security/krb5</package>
       and <package role="port">security/heimdal</package>.  For
       example, use <literal>bootstrap,mit</literal>.</para>