This is the development and release platform for the Proteus P&ID schema. The schema is based on XSD (https://www.w3.org/XML/Schema) and an provides the syntactic description for XML-files (https://www.w3.org/XML/) to be used for the import and export of piping and instrumentation diagrams. Proteus Schema is currently used by a variety of industry companies, software vendors
The latest release is Proteus Schema 4.2.
If you want to contribute to the development of the Proteus Schema, please contact the international initatives DEXPI or CII (aka FIATECH).