added print translations tha avoid eta contraction for important binders.
(* Title: HOLCF/ssum2.thy
ID: $Id$
Author: Franz Regensburger
License: GPL (GNU GENERAL PUBLIC LICENSE)
Class Instance ++::(pcpo,pcpo)po
*)
Ssum2 = Ssum1 +
instance "++"::(pcpo,pcpo)po (refl_less_ssum,antisym_less_ssum,trans_less_ssum)
end