So far I have a screen editor loosely based on FLEXIKEY.
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LEFT ARROW MOVES LEFT. RIGHT MOVES RIGHT.
SHIFT-LEFT IS BKSP. SHIFT-RIGHT IS DEL.
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UP MOVES UP. SHIFT-DOWN TOGGLES INSERT.
DOWN MOVES DOWN. SHIFT-UP EXITS.
ENTER OPENS LINE. ALT THEN ENTER DELETES LINE.
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ALT is SHIFT-CLEAR. ON Vcc it is SHIFT-HOME.
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ALT THEN SHIFT-RIGHT IS ]. ALT THEN ALT IS \.
ALT THEN SHIFT-DOWN IS [. ALT THEN UP IS up-arrow.
ALT THEN SHIFT-UP IS left-arrow.
