calculate z510 # emerge -C zim
 * This action can remove important packages! In order to be safer, use
 * `emerge -pv --depclean <atom>` to check for reverse dependencies before
 * removing packages.
 x11-misc/zim
    selected: 0.73.1 
   protected: none 
     omitted: none 
All selected packages: =x11-misc/zim-0.73.1
>>> 'Selected' packages are slated for removal.
>>> 'Protected' and 'omitted' packages will not be removed.
>>> Waiting 5 seconds before starting...
>>> (Control-C to abort)...
>>> Unmerging in: 5 4 3 2 1
>>> Unmerging (1 of 1) x11-misc/zim-0.73.1...