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
@@ -382,9 +382,10 @@
 
 	  <entry>(none)</entry>
 
-	  <entry>Add a runtime dependency on
-	    <filename>libexecinfo.so</filename> depending on its
-	    presence in the base system.</entry>
+	  <entry>Add a library dependency on <package
+	      role="port">devel/libexecinfo</package> if
+	    <filename>libexecinfo.so</filename> is not present in the
+	    base system.</entry>
 	</row>
 
 	<row xml:id="uses-fam">
@@ -484,8 +485,9 @@
 	  <entry>(none)</entry>
 
 	  <entry>Add a buildtime dependency on <package
-	      role="port">devel/gperf</package> depending on its
-	    presence in the base system.</entry>
+	      role="port">devel/gperf</package> if
+	    <command>gperf</command> is not present in the base
+	    system.</entry>
 	</row>
 
 	<row xml:id="uses-gssapi">
@@ -723,7 +725,7 @@
 	    <literal>run</literal></entry>
 
 	  <entry>Adds a dependency on <application>Lua</application>.
-	    By default this is a library undependency, unless
+	    By default this is a library dependency, unless
 	    overridden by the <literal>build</literal> or
 	    <literal>run</literal> option.  The default version is
 	    5.2, unless set by the
@@ -987,7 +989,8 @@
 	  <entry>Uses <application>readline</application> as library
 	    dependency, and sets <varname>CPPFLAGS</varname> and
 	    <varname>LDFLAGS</varname> as necessary.  If the
-	    <literal>port</literal> argument is used, force the use of
+	    <literal>port</literal> argument is used or if readline
+	    is not present in the base system, add a dependency on
 	    <package role="port">devel/readline</package></entry>
 	</row>