ISO 10303-21:2016 Preview
Industrial automation systems and integration -- Product data representation and exchange -- Part 21: Implementation methods: Clear text encoding of the exchange structure
ISO 10303-21:2016 specifies an exchange format that allows product data described in the EXPRESS language to be transferred from one computer system to another. ISO 10303-21:2016 adds anchor, reference and signature sections to support external references, support for compressed exchange structures in an archive, digital signatures and UTF-8 character encoding.
Buy this standard