#. run your python code, which creates a 2D mesh,
#. invoke **Compute** command, which computes a 3D mesh.
-.. warning:: **Use Edges to be Created Manually** and **Use Faces to be Created Manually** algorithms should be assigned *before* mesh generation by the Python code.
+ .. warning::
+ * **Use Edges to be Created Manually** and **Use Faces to be Created Manually** algorithms should be assigned *before* mesh generation by the Python code.
+ * Nodes and elements created in your script must be assigned to geometry entities by calling *SetMeshElementOnShape*, *SetNodeOnVertex*, *SetNodeOnEdge* etc. in order to be used by an algorithm of upper dimension.
Consider trying a sample script demonstrating the usage of :ref:`Use Faces to be Created Manually <tui_use_existing_faces>` algorithm for construction of a 2D mesh using Python commands.
Returns:
A list of edge groups and a list of corresponding node groups,
- where the group is a list of IDs of edges or elements, like follows
+ where the group is a list of IDs of edges or nodes, like follows
[[[branch_edges_1],[branch_edges_2]], [[branch_nodes_1],[branch_nodes_2]]].
If a group is closed, the first and last nodes of the group are same.
"""
