On some jukeboxes, tapes can come in and out of jukeboxes via some form of "mailbox slot" or port where tapes can be entered into the jukebox without opening and closing the door. The "import" and "export" commands are used to do this. You can tell if the jukebox you have supports this by whether it lists any "port" locations in the list output.
By default, "import" will use port 0 and put the tape in the next available slot, and give it the name you specify on the command line. An example of using import like this follows:
% juke
> set jukebox xyz
> import "newtapename"
Insert tape and press enter:
> list
default drive: d0
default slot: s0
default port: p0
NAME WHERE HOPS DATE
fnsfc.Mon.A slot 0 0 Tue Jun 29 18:37:49 1993
fnsfb.Mon.A slot 1 0 Tue Jun 29 18:37:57 1993
fnsfa.Mon.A slot 2 0 Tue Jun 29 18:31:13 1993
fnsfg.Mon.A slot 3 2 Tue Jun 29 18:31:09 1993
...
newtapename slot 56 2 Tue Jun 29 18:31:09 1993
...
(empty) drive 0 ( tps0d3) 0 Wed Dec 31 18:00:00 1969
(empty) drive 0 ( tps0d3) 0 Wed Dec 31 18:00:00 1969
(empty) drive 0 ( tps0d3) 0 Wed Dec 31 18:00:00 1969
(empty) drive 0 ( tps0d3) 0 Wed Dec 31 18:00:00 1969
(empty) port 0 0 Wed Dec 31 18:00:00 1969
...
... or from the command line:
% juke import jukebox xyz "newtapename"
Insert tape and press enter:
%
If you want, you can specify what slot to put the tape in, like:
% juke import jukebox xyz slot 55 "newtapename"
Insert tape and press enter:
%
to put it in slot 55.