revision preference src: They guide the development of new or improved technologies from its conception, through development and into manufacturing. They borrow on concepts of manufacturing execution systems (MES) systems but tailor them for R&D rather than for production. <SEP> tgt: They guide the development of new or improved technologies from its conception, through development and into manufacturing. Furthermore they borrow on concepts of manufacturing execution systems (MES) systems but tailor them for R&D rather than for production.