and all the keys with the same link have the same colors in the diagram all inert and outer points of the main with the same color can be linked together as one of then is not affiliated with keyboard ic.so as a key or a set of keys does not work you cana do jumpers ashamed by the color as shown in diagram.
Outside Core related keys
row a = R, 7, Send, Links
Row B = 9, Up, Down, Left Soft
Row C = 3, 6, Soft right #
row d = 2, 5, 8, 0
row E = 1, 4, *
Inner core attached buttons
Column a = R, 9, 3, 2, 1
column b = 7, Up, 6, 5, 4
Column C = Forward, Down, Right Soft, 8
Column D = Left, Soft Left, #, 0, *
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