Quote:
Originally Posted by AlyciaAnimation
I can't see how it would be possible to have them both up front because then what would be in the menu bar?
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Yes, and when one types something on the keyboard, how should the computer know which application is supposed to receive and interpret those keystrokes if it is to consider more than one application to be "in front"?
The computer must always have a notion of a single "current" application. The technical description for this is "the window that has the focus". The best one can do is have sufficient screen space to have multiple application windows fully uncovered at all times, but one still needs to select which of the two application windows has the focus at any given moment. That's the only way for some input devices (like the keyboard) to be able to work.