Concertina v0.6.0 intermediate abstraction

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Logical nodes superimposed over this photo.

In galleries:

Neighbour image Keyboard wiring illustrations
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Neighbour image The DMOTE
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Image originated 2020-11-01T07:14:54+00:00. References here: 3D keyboard wiring, Concertina v0.6.0 nodes.

Viewed 2020-11-25. Ugly in unsafe old browsers.