funchords , 11 months ago It closes whole windows. You can try it safely by opening a second Firefox whole window, open a few tabs on it, and then Alt-F, D and the entire window closes. (Your first Firefox window is unaffected.)
It closes whole windows. You can try it safely by opening a second Firefox whole window, open a few tabs on it, and then Alt-F, D and the entire window closes. (Your first Firefox window is unaffected.)