.. todo:: This command has not yet been ported to the *new APBS syntax* (see :ref:`new_input_format`).
Specify the name of the file into which the potential surface on the coarse-grain molecule surface will be printed.
3dmap {filename}where filename is a string for the name of the file where a 3D grid will be printed out.
.. todo:: The PB-(S)AM ``3dmap`` keyword should not exist; please replace it ASAP with the :ref:`old_write` command. Documented this todo as https://github.com/Electrostatics/apbs/issues/482