Make a link for Tcl

diff --git a/doc/installation.xml b/doc/installation.xml
index e052ec0..7ef2b4e 100644 (file)
--- a/doc/installation.xml
+++ b/doc/installation.xml
@@ -527,8 +527,8 @@
        <term><literal>HAVE_TCL</literal>, <literal>TCL</literal></term>
        <listitem><para>
          If <literal>HAVE_TCL</literal> is set to 1, nmake will
-         use the ASN.1 compiler (Tcl based). You must set
-         <literal>TCL</literal> to the full path of the Tcl
+         use the ASN.1 compiler (<ulink url="&url.tcl;">Tcl</ulink> based).
+         You must set <literal>TCL</literal> to the full path of the Tcl
          interpreter.
         </para>
         <para>