Abstract: A method and a computer program for producing a parts program are disclosed. The parts program includes control instructions which enable a control device of a machine tool to control movements of a tool, with the steps of reading in movement information relating to movements and machining operations to be performed by the tool, reading in availability information which identifies control subprograms available in the control device for predetermined machining operations to be performed by the tool and, if a control subprogram associated with a predetermined machining operation is available in the control device, generating a control instruction for the parts program from the available control subprograms and the movement information in form of a call for the control subprogram associated with the machining operation. Production of a parts program for a machine tool is thereby simplified.