#include <Standard_Handle.hxx>
#include <Prs3d_Drawer.hxx>
-#include <Standard_Boolean.hxx>
-class Prs3d_Presentation;
-class gp_Pnt;
+#include <Prs3d_Presentation.hxx>
+class gp_Pnt;
//! A framework to define display of perpendicular
//! constraints between shapes.