This is the bug that most of all makes me long for os9, but apart from this crucial omission, osX is great.
In os9, i pressed ctrl-x etc for emacs C-x, and I pressed (simultaneously) ctrl-alt-x for emacs M-x. Only for some commands you have to press ESC and then the key. In osX, this possibility is blocked. In terminal settings (Keyboard), I can choose to have alt key set as meta key, but that road is blocked, for obvious reasons: Being a linguist, I need the alt key to various non-ascii letters, this was what made me a mac user in the mid eighties. In os9, there was a further option: "alt option as meta". So, how can I get my meta back?