1. G Function Description
3. Q must be specified to a positive value. If Q were a negative value,
it will be specified to positive value (absolute value), data Q and
data R specified only be set in drilling block, it will not be set in
not drilling block.
4. G Code group 01 and G87 can not be specified in the same block,
or G76 Canned Cycle cancel.
5. in Canned Cycle, tool length compensation mode (G41/G42/G40)
will be ignored.
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