My understanding of hidden edges on an editable_mesh/trimesh is that a triangles three verts when put in numerical order directly correspond to the faces edge number. So for instance if we have a triangle made of verts [3,5,7] the edge between vert 3 & 5 is edge index one, 5 & 7 is edge index two, and 7 & 3 is edge index 3. From this we can can simply run (for e=1 to 3 collect (getEdgeVis $ theFaceIndex e)) to get the visibility of all 3 edges and know which verts they correspond to.

Unfortunately it seems I’m wrong on this, as if this was correct the code below would give a different result:

```
delete $geometry --clear meshs from scene
b1 = Box pos:[-20,0,0] isSelected:off width:15 length:15 height:15 name:"basicBox"
ConvertTo b1 Editable_Mesh
--face 12 is made of verts [3,5,7] , with the edge between 3 and 5 being hidden and the other two being visible.
--So in theory this should return #(false,true,true) , however its instead returning #(true, true, false)
edjVis = for e=1 to 3 collect (getEdgeVis b1 12 e)
```

Can someone explain the correct way to get the edge between two verts for gettings/setting visibility?