# TopoFeaturePropertyDefinition.h File Reference

`#include <FdoStd.h>`
`#include <Fdo/Schema/PropertyDefinition.h>`

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## Classes
class | FdoTopoFeaturePropertyDefinition
| FdoTopoFeaturePropertyDefinition derives from FdoPropertyDefinition and its values can be used to relate topological primitives to one or more application domain features. One can use the short form "TopoFeature" to refer to these properties. The semantics of this property are similar to Object properties. One uses FdoIFeatureReader::GetObject() to retrieve values. More...