I realise phped5 just came out, and its a fantastic upgrade, but I wanted to suggest the addition of a CONSTANTS tab, beside the LOCALS and GLOBALS when debugging. I think this would be immensely helpful to many people.
Btw, for those who do not know yet, if you add "get_defined_constants()" to the watchlist it will populate it with all constants. However I feel that a dedicated tab makes it more convenient
Thanks
Correction: It appears that the get_defined_constants() value is saved in the watchlist even if you close PHPEd. This suggestion would still make things easier but anyone who wants to can use the simple workaround for now.