APBS visualization example
&cntrl
   maxcyc=0, imin=1,
   cut=12.0,
   igb=6, ntb=0
   ntpr=1,
 /
&apbs
    apbs_debug = 100,
    apbs_print=100,
    calc_type = 0,
    grid = 0.5, 0.5, 0.5,
    srad = 0.7,
    wpot = 1, wchg = 1, wsmol =1,
    sp_apbs=.true.,
    calcnpenergy=0, calcnpforce=0,
&end
    
