Similarly to the fetch feature for pdb files, it would be nice to have a function to download electron density maps from the electron density server: http://eds.bmc.uu.se/eds/ . This would make structure analysis easier for users who are interested in looking into density maps directly. The command could look like this:
fetch_eds pdb_code, map_format, map_type, object_name
The map type would be either 2mFo-DFc or mFo-DFc (maybe keywords: 2fofc, fofc). The map format could be ccp4 as default and cns as an option. I am not should if pymol can handle o or ezd formats.