added make_chart

--- a/src/HOLCF/ex/ROOT.ML	Wed Oct 25 10:49:53 1995 +0100
+++ b/src/HOLCF/ex/ROOT.ML	Wed Oct 25 12:53:24 1995 +0100
@@ -15,4 +15,6 @@
 time_use_thy "ex/Fix2";
 time_use "ex/loeckx.ML";
 
+make_chart ();   (*make HTML chart*)
+
 maketest     "END: Root file for HOLCF examples";