typedef union { PEXPSCIsoparametricCurves iso_curves; PEXPSCLevelCurves level_curves; PEXPSCImpDepData imp_dep; } PEXPSCData;
PEXPSCData is a type definition that is common to the following function:
and is referenced by the following data structures:
For a list of data structures for parametric surface characteristics, see Data Structures for Parametric Surface Characteristics.