What would happen if ES is interupted by accident (the mouse is bumped or wrong key is pushed) while its downloading or rendering? Does it finish the download / frame later or delete and start over again? I'm asking because I always check before I hit the escape key or mouse since I don't want to lose anything if that is the case.
I'm guesing I'm not the only user with this question.
Also, how do I use spellchecker when I compose in the forums?

it exits immediately and
it exits immediately and whatever work is in progress is lost. you don't have to be so polite -- there are plenty of users.
the spellcheck thing seems to be a drupal problem, see http://drupal.org/node/135150 hopefully we can get it fixed.