Left space key sends <MENU> with upgraded firmware.
Abschnitt zu Mod3 und Mod4 in der Mittelreihe.
Mod 3 on left and right blank keys
simplified code for M3+M4
"Grave/Tilde" key (left of 1) was wrongly called <AE00>; now correct <TLDE>.
typographische Konvention vereinheitlicht (Taste vs Symbol)
Key j gets y's M4 mapping (period) instead of semicolon.