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If using automatic block selection, checking this box indicates this blocking ring should be considered in the list of blocks for this blocking group.
Dynamic Sequence
If using automatic block ring selection, indicate the sequence that this particular ring should be considered. Note that the sequence number must be unique within the blocking group (you cannot have two block rings of the same sequence within the same group).
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Default block groups can be set for toric and digital jobs, on the "Setup", "System Parameters" screen, "Blocking" tab:
For purposes of illustration, if we set two block groups, with blocking rings and sequences as follows:
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