The element trees for datum curve features supported in Creo TOOLKIT are documented in the header file ProDtmCrv.h. Each datum feature type has a unique element tree containing the parameters and references necessary to create that type of feature.

Not all datum curve types are currently supported in Creo TOOLKIT. Some curve feature types are yet to be converted into element tree form. Other curve types have element trees with data that is not yet accessible through Creo TOOLKIT.