A support medium is capable of being read by a numerical control system of a bending machine. The support medium stores program instructions for searching, in a memory region storing at least one group of data, each containing bending conditions, a bend angle and at least one penetration depth, whether input data including a desired bend angle and bending conditions are stored in the memory region, in a same group of data. The support medium sends a signal to the bending machine so that the bending machine executes a bending according to the penetration depth included in the same group of data.
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