Petr,
important is that now html text from help is correctly (or almost correctly) copied /pasted.
Help window is now always foreground respect to thinAir because I checked how SED was creating the help window, so mainly I followed its behave.
But if this is something weird for you I will change.
Regarding keys being intercepted by thinAir before the help window it is something I've never seen and at the moment I do not understand the reasons why it could happen. I'm investigating.
Eros