FALLINTOFLST, Fall-through to a label with formallist is not allowed

Run Time/Compile Time Error: This error indicates that M code reached a label with a formallist by falling through from the previous label. When issued as a warning, it indicates the compiler determined such an error could happen and may have inserted an implicit QUIT to prevent the run-time error

Action: Revisit your code to ensure that all invocations of labels with a formallist occur using a DO command or extrinsic function ($$).

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