text: Wood's notation takes the form
  where M is the chemical symbol of the substrate, A is the chemical symbol of the overlayer,  are the Miller indices of the surface plane, R and  correspond to the rotational difference between the substrate and overlayer vectors, and the vector magnitudes shown are those of the substrate ( subscripts) and of the overlayer ( subscripts). This notation can only describe commensurate overlayers however, while matrix notation can describe both.