controls the Main Boom (up & down) and Bucket motions (close & dump). This control pattern is standardised in ISO 10968 and SAE J1177.

*Left hand left = Swing left.
*Left hand right = Swing right.
*Left hand forward = Stick Boom (Dipper) away.
*Left hand back = Stick Boom (Dipper) close.
*Right hand left = Bucket curl in (closed)
*Right hand right = Bucket curl out (dump)
*Right hand forward = Main Boom down.
*Right hand back = Main Boom up.

SAE controls

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