At the moment, the "survival" key (Tab) is disabled while the container window is open. Since the player is led to hit Tab to access the most important window anyway, Tab should also close the container window. When I want to relocate to better real estate, I clean out the containers in a flash. Stacks, with their separate window prompts, force me to position my cursor in the sweet spot where the < button and the Transfer All button would overlap. Moving the < button just a bit lower so that its center can overlap easier with the TA button would be nice, but a Take All button in the container window (displayed as a << symbol, under the < symbol) would be even nicer.