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.