diff --git a/chapter08/groff.xml b/chapter08/groff.xml
index 64739ac67..1b0870d9d 100644
--- a/chapter08/groff.xml
+++ b/chapter08/groff.xml
@@ -24,7 +24,7 @@
     <title/>
 
     <para>The Groff package contains programs for processing and formatting
-    text.</para>
+    text and images.</para>
 
     <segmentedlist>
       <segtitle>&buildtime;</segtitle>
@@ -168,7 +168,7 @@
       <varlistentry id="gperl">
         <term><command>gperl</command></term>
         <listitem>
-          <para>Preprocesor for groff, allowing addition of perl code
+          <para>Preprocesor for groff, allowing the insertion of perl code
           into groff files</para>
           <indexterm zone="ch-system-groff gperl">
             <primary sortas="b-gperl">gperl</primary>
@@ -179,8 +179,8 @@
       <varlistentry id="gpinyin">
         <term><command>gpinyin</command></term>
         <listitem>
-          <para>Preprocesor for groff, allowing addition of Chinese
-          European-like language Pinyin into groff files.</para>
+          <para>Preprocesor for groff, allowing the insertion of Pinyin
+          (Mandarin Chinese spelled with the Roman alphabet) into groff files.</para>
           <indexterm zone="ch-system-groff gpinyin">
             <primary sortas="b-gpinyin">gpinyin</primary>
           </indexterm>
@@ -190,7 +190,8 @@
       <varlistentry id="grap2graph">
         <term><command>grap2graph</command></term>
         <listitem>
-          <para>Converts a grap diagram into a cropped bitmap image</para>
+          <para>Converts a grap program file into a cropped bitmap image
+          (grap is an old Unix programming language for creating diagrams)</para>
           <indexterm zone="ch-system-groff grap2graph">
             <primary sortas="b-grap2graph">grap2graph</primary>
           </indexterm>
@@ -211,7 +212,7 @@
         <term><command>grodvi</command></term>
         <listitem>
           <para>A driver for <command>groff</command> that produces TeX dvi
-          format</para>
+          format output files</para>
           <indexterm zone="ch-system-groff grodvi">
             <primary sortas="b-grodvi">grodvi</primary>
           </indexterm>