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M3topoAddVertices
Takes a topology as a parameter.
Adds a new vertex list to the list of vertices for the topology referenced by the mesh.
The function returns the index of the last vertex added (the addition of vertices is incremental).
The position coordinates are integer values.

I M3topoAddVertices (
S3d _session_
H3d _topo_
[[I I I] r1] _vertices_
)
Parameters

_session_
3D Session
_topo_
Topology
_vertices_
Positions of vertices
Return value

Index of the last vertex added