dynamic_cast<const SMDS_VtkFace*>(anElem);
// use special nodes iterator
SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
dynamic_cast<const SMDS_VtkFace*>(anElem);
// use special nodes iterator
SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();