ISO/TS 10303-1790:2019 specifies the application module for
Parameterization and variational representation.

The following are within the scope of
ISO/TS 10303-1790:2019:

• association of parameters and constraints with models at the representation level, to create variational
  models of products, plans, processes or organizations;
• representation of models that are incompletely defined in the sense that certain values in the model
  may be regarded as not fully constrained;
• items within the scope of application module Elemental geometric shape, ISO/TS 10303-1004;
• items within the scope of application module Maths space, ISO/TS 10303-1091.