C++
Acad::ErrorStatus makeNOpen();
Description
This function sets the PolygonMesh to be open in the N direction. This means that the mesh will be discontinuous between the last column and the first column.
Making the PolygonMesh open in the N direction clears bit 6 of DXF group code 70.
Returns Acad::eOk if successful or Acad::eInvalidInput if the data passed in is not acceptable.