There is a manual page. Nobody updated those fancy doc things. http://manpages.debian.org/cgi-bin/man.cgi?query=apt http://manpages.debian.org/cgi-bin/man.cgi?

There is a manual page. Nobody updated those fancy doc things. http://manpages.debian.org/cgi-bin/man.cgi?query=apt http://manpages.debian.org/cgi-bin/man.cgi?query=apt