Electron Keymapping
                                   ===================

+==+====+====+====+====+====+====+====+====+====+====+=====+=====+=====+=====+=====+=====+
|  | x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7 | x8 | x9 | xA  | xB  | xC  | xD  | xE  | xF  |
+==+====+====+====+====+====+====+====+====+====+====+=====+=====+=====+=====+=====+=====+
|0x| c0 | cA | cB | cC | cD | cE | cF | cG | cH | cI | cJ  | cK  | cL  | cM  | cN  | cO  |
|  |    |    |    |    |    |    |    |    |    |    |     |     |     |Retrn|     |     |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|1x| cP | cQ | cR | cS | cT | cU | cV | cW | cX | cY | cZ  | Esc | c,  | c-  | c.  | c/  |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|7x|    |    |    |    |    |    |    |    |    |    |     |     |     |     |     | Del |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|8x| f0 | f1 | f2 | f3 | f4 | f5 | f6 | f7 | f8 | f9 |     | Copy| <-  | ->  | Dn  | Up  |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|9x| fA | fB | fC | fD | fE | fF | fG | fH | fI | fJ | fK  | fL  | fM  | fN  | fO  | fP  |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|Ax| fQ | fR | fS | fT | fU | fV | fW | fX | fY | fZ | f:  | f;  | f,  | f-  | f.  | f/  |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|Bx|    |    |    |    |    |    |    |    |    |    |     |     |     |     |     | Del |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+
|Cx|    |    |    |    |    |    |    |    |    |    |Break|     |     |     |     |     |
+--+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+-----+

Top-bit-set keypresses are translated with *FX221-*FX228. Setting characters &9x and &Ax
to &01 programs them to be language firm keys rather than *KEY soft keys. There is no TAB
key on the Electron keyboard. After-market additions generate Ctrl-H.

Because of the restricted Electron keyboard there is no such thing as modified function or
editing keys. For instance, SHIFT+cursors gives £ _ ^ | and not Shift+fkey.