diff --git a/install/unix/index.xml b/install/unix/index.xml
index 2892c69a8d..d1604fa635 100644
--- a/install/unix/index.xml
+++ b/install/unix/index.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
   <chapter id="install.unix">
    <title>Installation on Unix systems</title>
    <para>
@@ -43,12 +43,12 @@
      </listitem> 
      <listitem>
       <simpara>
-       flex
+       flex: Version 2.5.4
       </simpara>
      </listitem>
      <listitem>
       <simpara>
-       bison
+       bison: Version 1.28 (preferred), 1.35, or 1.75
       </simpara>
      </listitem>
      <listitem>
@@ -66,8 +66,10 @@
    
    <para>
     The initial PHP setup and configuration process is controlled by the
-    use of the commandline options of the <filename>configure</filename>
-    script. Our manual documents the different options separately. You will
+    use of the commandline options of the <command>configure</command>
+    script. You could get a list of all available options along with short
+    explanations running <command>./configure --help</command>.
+    Our manual documents the different options separately. You will
     find the <link linkend="configure">core options in the appendix</link>,
     while the different extension specific options are descibed on the
     reference pages.
@@ -113,4 +115,3 @@ vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
 -->
-