Expand description
§NEXT [<variable>][,<variable>...]
Also see FOR
§Purpose
Used to indicate the end of a FOR loop.
§Remarks
FOR loops are stack based. Specifying an optional variable
here will enforce that the stack frame being used matches.
Some confusion (or abuse) can happen if using GOTO to break a loop.
§Example
FOR I=1 to 10:NEXT
FOR J=1 to 20:FOR I=1 to 20:NEXT I,J