This section describes the Creo.JS methods and classes that affect dimensions and parameters.

Dimensions and parameters in Creo Parametric have similar characteristics but also have significant differences. In Creo.JS, the similarities between dimensions and parameters are contained in the pfcBaseParameter class. This class provides access to the parameter or dimension value and to information regarding designation and modification for a parameter. The differences between parameters and dimensions are recognizable because pfcDimension inherits from the class pfcModelItem, and can be assigned tolerances, whereas parameters are not pfcModelItem and cannot have tolerances.