ApproxInt → NCollection Relation

File in src/ApproxInt	Includes file in src/NCollection
ApproxInt_KnotTools.hxx	NCollection_List.hxx
ApproxInt_KnotTools.hxx	NCollection_LocalArray.hxx
ApproxInt_KnotTools.hxx	NCollection_Sequence.hxx
ApproxInt_KnotTools.hxx	NCollection_Vector.hxx