The paper describes supportive actions for users of NC machine tools. From the technical point of view, this comprises new input/output media for interaction with the machine as well as new software tools for help systems. From the organisational point of view, concepts for group work are to be supported and a methology for participation of users in the development process is suggested. A software tool for job order planning is presented which combines organisational and technical aspects. One of the (...) aims of the research reported here, is to explore options of systems which keep the human expert in the loop of shopfloor production. (shrink)