12 l = doc.mergeQuads(qa, qb, va1, vb1, va2, vb2)
16 - qa and qb are quadrangles. qa is the target quadrangle.
17 - va1, vb1, va2, vb2 are vertices
19 va1 : vertex of the quadrangle qa to merge with the vertex vb1 of the
22 va2 : vertex of the quadrangle qa to merge with the vertex vb2 of the
25 va1, vb1, va2, vb2 can be set to `None` if the quadrangles are contiguous.
29 l = doc.mergeEdges(e1, e2, v1, v2)
34 - v1 is the vertex of the edge e1 to merge with the vertex v2 of the edge e2
39 l = doc.mergeVertices(v1, v2)
41 where v1 and v2 are vertices.
43 GUI command: :ref:`guimergeelements`