Browse the EXPRESS schemas of the APs, IRs, AICs, and other SC4
standards. This reference site holds the most current versions of the
EXPRESS definitions as well as the history of any changes.
Other EXPRESS Services
Browse existing short names with our easy-to-use short name server, or
make your own short names with our short name generator. Also
including an EXPRESS compiler and checker.
Email lists to stay in touch with the standards community. Share
ideas, browse, or simply keep up with the latest developments. Lists
for manufacturing, implementation, and building forums, as well as
Working Groups 10 and 11.
STEP Implementors Forum
STEP Manufacturing Forum
Our collection of online information about the STEP standard.
ISO TC184/SC4 website
TC184/SC4 reference site for working group documents and other