mapping of C-z

Hi The change of mapping of C-z from suspend-or-iconify-emacs to zap-up-to-char, in XEmacs 21.5.16 in my opinion, is a nasty surprise. I am used to pressing C-z and then continue typing on the terminal hidden below XEmacs. When I did that the first time on 21.5.16 I lost a bunch of data. Sure, I could undo it, but it took me a while to realize what happened. I just wanted to say that I am not happy with this change and I hope changing such benign mappings into destructive ones went through some discussion and was done for a good reason and not just committed on a whim. kaarthik