[TxMt] Is it possible to simulate EMACS-style selection marks?

I'd like to be able to set an explicit "selection mark", as can be done in EMACS, and then to cut or replace text in the selection range. (For non-EMACSers; the selection mark is similar to a bookmark, but indicates the 'other end' of the selection range, 'this end' being the location of the cursor. Under most GUI editors, moving the cursor deselects currently selected text, while under the mark selection style, the mark stays in place even when the cursor moves, which is great the text you need to select spans more than one page.) Looking at the relevant section of the TextMate manual didn't indicate anything obvious, does TM have any sort of support for this style of copying/cutting/pasting?

Thanks, Ken