VertexCoordinates

is an option to Graph and related functions that specifies the coordinates to use to place the center of vertices.

Details

The following settings for VertexCoordinates can be used:
Automatic automatically compute vertex coordinates

{pt₁,pt₂,…} place vertex v₁ at pt₁ etc.
With the setting VertexCoordinates->Automatic, the center coordinates for vertices are computed according to the setting for GraphLayout.
With the setting VertexCoordinates->{pt₁,pt₂,…}, the vertices {v₁,v₂,…} are given in the order returned by VertexList.