model_map_generation.md

@@ -31,7 +31,7 @@ CCTBX/CCP4 follow the ZXY map axis order convention, whereas most EM programs fo
 By default structure factors from the model are computed up to the theoretical sampling maximum at Nyquist frequency. This is the preferred procedure for sharpening using LocScale. A different resolution cut-off for computation of the reference map can be supplied using the ```-dmin``` flag, e.g.
 
 ```
-phenix.python prepare_locscale_input.py -mc pdb3j5p.pdb -em emd_5778_full.map -dmin 4.0
+phenix.python prepare_locscale_input.py -mc pdb3j5p.pdb -em emd_5778_full.map -ma emd_5778_mask.map -dmin 4.0
 ```  
   
 Please be aware that CCTBX currently only supports parameterized electron scattering factors for neutral atoms. To take into account charged atoms please consult reference [4] and modify the tabulated electron scattering table accordingly.