P P P P BBB B B B z @-\ CCP4N MAP DA )E> written by GEMMI x,y,z -y+1/2,x+1/2,z+1/4 -x,-y,z+1/2 y+1/2,-x+1/2,z+3/4 x+1/2,-y+1/2,-z+3/4 -y,-x,-z+1/2 -x+1/2,y+1/2,-z+1/4 y,x,-z =ւ<8=3O=~#K=",=q=6=J"=LmXH