not entirely correct, hold the cancel/esc/return button for a couple of seconds, or bring down the menu with the menu button and select close->close (all) window(s).

also, the home menu allows one to close a window.

the problem with full screen apps, imo, is that they quickly become "swiss army knifes" or mini-os's, as people want to do more without having to leave their ui.

heh, as one start to think about it, a canola plugin and a hildonized app i fairly short. both integrate into the ui of their "parent".