This command allows APBS to read the dielectric function mapped to 3 meshes shifted by one-half grid spacing in the x, y, and z directions. The inputs are maps of dielectric variables between the solvent and biomolecular dielectric constants; these values are unitless. In general, this command will read dielectric maps written by write commands in earlier APBS calculations.
NOTE: if you choose this option and have a non-zero ionic strength, you must also include a read kappa statement
Required arguments for this command are: