var obj = ActiveSceneRoot.AddGeometry( "Cube", "MeshSurface" );

var segment = obj.ActivePrimitive.Geometry.Segments(7);

LogMessage( "The first segment of this geometry is of index " + segment.Navigate(siFirstComponent).Index );

LogMessage( "The last segment of this geometry is of index " + segment.Navigate(siLastComponent).Index );

LogMessage( "The next segment is of index " + segment.Navigate(siNextComponent).Index );

LogMessage( "The previous segment is of index " + segment.Navigate(siPreviousComponent).Index );

// Expected result:

//INFO : The first segment of this geometry is of index 0

//INFO : The last segment of this geometry is of index 11

//INFO : The next segment is of index 8

//INFO : The previous segment is of index 6