windowed mode?

[darklord]

Is there some way to switch to windowed mode in Mac OS X?

I know it used to be possible in the commercial releases, but I can't remember how.

[capnq]

I have no idea about OS X, but on my Windows box it already runs in a fixed-size window smaller than my normal screen resolution. I can open the manual and switch between them normally with just the task bar.

[Johan K]

Press alt+return or ctrl+tab to switch between fullscreen and window.