Get the number of vertices used only by the model of blocks::
sum_u = doc.countUsedVertex()
+
+Get the vertices used by the model of blocks
+
+.. literalinclude:: test_doc/vertex/vertex.py
Get a vertex of the document::
vertex_f = doc.findVertex(x, y, z)
+More operations: *Vertex* inherits :ref:`Element <tuielement>`.
GUI command: :ref:`guivertex`