Complex sentence: AP 242 is the new ISO 10303 STEP application protocol for Computer-aided design of product models, which is the convergence of AP 203 from aerospace and AP 214 from automotive into an extended superset based on the STEP modular architecture.
Split into simpler sentences: AP 242 is the new ISO 10303 STEP application protocol for Computer-aided design of product models. It is the convergence of AP 203 from aerospace and AP 214 from automotive into a superset based on the STEP modular architecture.