Index: openacs-4/packages/acs-core-docs/www/xml/install-guide/aolserver4.xml
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-core-docs/www/xml/install-guide/aolserver4.xml,v
diff -u -r1.6.2.5 -r1.6.2.6
--- openacs-4/packages/acs-core-docs/www/xml/install-guide/aolserver4.xml	15 Oct 2004 07:46:05 -0000	1.6.2.5
+++ openacs-4/packages/acs-core-docs/www/xml/install-guide/aolserver4.xml	15 Nov 2004 12:19:52 -0000	1.6.2.6
@@ -13,14 +13,34 @@
   </authorblurb>
 
   <orderedlist>
+    <listitem>
+      <formalpara>
+        <title>Check suitability of previously installed TCL</title>
+        <para>Start tcl (type <userinput>tclsh</userinput> or find it using <userinput>which tclsh</userinput>).
+        </para>
+      </formalpara>
+      <screen>[root root]% <userinput>info exists tcl_platform(threaded)</userinput>
+1
+[root root]% <userinput>info patchlevel</userinput>
+8.4.7
+[root root]%
+<action>tclsh
+info exists tcl_platform(threaded)
+info patchlevel
+</action></screen>
+      <para>If the first command returns anything other than <computeroutput>1</computeroutput>, 
+      then tcl is not threaded. If tcl is threaded and the version is 8.4 or higher, then installing
+      tcl from source is optional.
+      </para>
+    </listitem>
     <listitem id="tcl-download">
       <formalpara>
         <title>Retrieve TCL 8.4 (or higher)</title>
-        <para>Download and install TCL 8.4</para>
+        <para>Download and install TCL 8.4 from source</para>
       </formalpara>
-      <para>If you have not installed TCL already, download the latest TCL version from Sourceforge</para>
+      <para>If you have not installed a threaded version of TCL, download the latest TCL version from Sourceforge</para>
       <para>Remember that you have to be root if you want to follow these instructions. On Mac OS X type <userinput>sudo su -</userinput> to become root.</para>
-<para>Alternatively use <userinput>curl -L -O</userinput> instead of <userinput>wget</userinput> (especially on Mac OS X.</para>
+<para>Alternatively use <userinput>curl -L -O</userinput> instead of <userinput>wget</userinput> (especially on Mac OS X).</para>
       <screen>[root root]# <userinput>cd /usr/local/src</userinput>
 [root src]# <userinput>wget http://heanet.dl.sourceforge.net/sourceforge/tcl/tcl8.4.7-src.tar.gz</userinput>
 [root src]# <userinput>tar xfz tcl8.4.7-src.tar.gz</userinput>
@@ -114,7 +134,7 @@
               <para>You can use the
               <computeroutput>ldd</computeroutput> command to verify
               that all libraries are linked in: 
-                <userinput>ldd nspostgres.so</userinput>
+                <userinput>ldd /usr/local/src/aolserver40r8/nspostgres/nspostgres.so</userinput>
               </para>
 
               <para>If you run into problems with libpq.a do the following (and repeat the step above)</para>