Ableton Forum

With the ability to save / copy.

Could be useful for performing and experimenting with different arrangements easily.

i say more!

http://www.ableton.com/forum/viewtopic. ... 010#654010

don't understand why it doesn't exist: multiple open documents

Have you tried the setting that lets you open multiple instances? Is that what you mean? I've read that can be a little unstable, I not really used it in a serious way.