Full-screen mode

Unlike most of ComputerCraft operating systems and shells, ACOS applications and Lua scripts running under ACOS can enter the Full-screen mode, in which they take up the whole screen making the GUI of the system invisible and enhancing the resolution of the program.

GUI behavior
Although GUI elements like the Top Bar or the S4 become invisible, key shortcuts are still active, making e.g. the S4 Search open up when Shift+Space is pressed.

Both FixedCards and FloatingCards can enter the Full-screen mode.

WIP