Actually there are existing significant deficits in the information flow along the NC process chain. The deficits are solved insufficient by introducing CAD-CAM systems and feature-oriented specification languages, because of the usage of the DIN 66025 as NC programming language. In contrast to that the application of new production technologies (like laser treatments) requires a high quantity and quality of information from the planning phases in the shop floor in order to compensate the relatively small collected wealth of experience with these technologies. A guidance system offers the machine operator now the possibility to access additional planning data. Thus it is possible, that new collected experience by setting up a NC program can be stored and reused in order to avoid repetitive errors in the numerical control procedure chain.