ISO/TS 10303-1778:2010-03 specifies the application module for External library.
The following are within the scope of ISO/TS 10303-1778:2010-03:
- definition of a library that is not included in the data exchange file;
- items within the scope of application module External source, ISO/TS 10303-1331;
- items within the scope of application module Plib class reference, ISO/TS 10303-1291.