Bug#203419: acknowledged by developer (Obvious)

[Dan Jacobson <jidanni@jidanni.org>]

D> All that is necessary is to run the same command(s) omitting the -d option.
D> -d is not an action; it just modifies the normal install or upgrade process
D> to stop after downloading the packages.  If you let it continue, the
D> packages will actually be installed.

therefore please modify the man page's

       --download-only
              Download  only;  package  files are only retrieved, not unpacked or installed.
              Configuration Item: APT::Get::Download-Only.

by adding

      To then install them, all that is necessary is to run the same
      command(s) omitting the -d option.

otherwise one wonders if

       --no-download
              Disables downloading of packages. This is best used with  --ignore-missing  to
              force  APT  to  use  only  the .debs it has already downloaded.  Configuration
              Item: APT::Get::Download.

must be used.

D> Stop filing bug reports against apt in order to get technical support.  This
D> is not the first time I have asked you to stop.

I feel my above documentation improvement is constructive.