vmail: show documentation on hcoop wiki

We need better help in domtool generally, but for now at least point
to something...

diff --git a/src/main-vmail.sml b/src/main-vmail.sml
index 2490d02..fccb384 100644 (file)
--- a/src/main-vmail.sml
+++ b/src/main-vmail.sml
@@ -71,4 +71,4 @@ val _ =
             else
                 print "Aborted\n")
            
             else
                 print "Aborted\n")
            

-         | _ => print "Invalid command-line arguments\n"
+         | _ => print "Invalid command-line arguments. See https://wiki.hcoop.net/MemberManual/Email/VirtualMail\n"