Dear kvak,
I think your indicator ATR - Stops1.02 BT is fantastic.
But it still has this minor glitch that it starts "blinking" (suddenly appearing without button pressed and disappearing after you move the mouse etc) whenever you zoom in and out.
So should you ever find the time to have another look at the code and be able to solve the problem I'd be grateful.

update: as I also use the button-indicator marwilli pointed out, it is possible that this one is causing the problem; although I never had it till I added ATR-button.
Anyway: only if you can find the time and energy; and only if no more pressing issues (see: Beatlemania) keep you occupied...
Thanks for all the work you have already done (it widened my horizon).