anchor: Mesh:setDrawRange
  Restricts the drawn vertices of the Mesh to a subset of the total.
  Mesh:setDrawRange( start, count )
  start number The index of the first vertex to use when drawing, or the index of the first value in the vertex map to use if one is set for this Mesh.
  count number The number of vertices to use when drawing, or number of values in the vertex map to use if one is set for this Mesh.
  Mesh:setDrawRange()