I'd assume he's referencing the "apt-add-repository" with ppm support, which automatically takes care of editing sources, adding GPG keys to sign the downloads,

I'd assume he's referencing the "apt-add-repository" with ppm support, which automatically takes care of editing sources, adding GPG keys to sign the downloads, and rebuilding the repo list, in one shot. It's not dramatically different than Fedora, but it's different enough you do appreciate it after awhile.