I don't use anything but PHPTemplate, but I think that we want to keep

the engine system. Why don't we just leave the theme_ function inclusion mechanism to the engine? PHPTemplate will require separate files, and

other engines can do what they please.

PHPTemplate is simple enough to use, and I think is sufficient. Anything simpler will add overhead and the question should be - how much overhead is allowable for a certain amount of simplicity? I am all for throwing the rest out and sticking with PHPTemplate. I don't know of many software programs or utilities that has more than one engine. I can't talk about Linux, as I know next to nothing thereabout, but Windows, for example, has one 'theme engine' if you can call it that, and you can just add different themes? I think one engine is sufficient. Kobus