6 F2 - save to current file
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7 F3 - close text, switch to commandline
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8 ESC - switch to commandline
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10 PG/UP & PG/DOWN, cursor keys, DEL, backspace, TAB, HOME & END, works as usual.
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15 ET - switch to text editor
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16 <file> ETl - load file, and switch to editor
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17 <file> ETs - save to file
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