bru to restore beer files

[Reinhard Doelz]

>The base level shell for modifying is called 'beer' (pun on 'bru' obvious),
>which sets up a simple daily, weekly and quarterly backup schedule for
>an operator to follow.  I believe it's installed in /etc and is standard
>with the release.

On my 3.1D 4D80/GT Iris it looks like if it were in /usr/adm/beer
  21 -rwxr-xr-x   1 root     sys        10341 Feb 16 10:03 beer.sh

*Question*: How do you retrieve information selectively from a tape 
(e.g., tape8 in the save set) without risking to get lost ? beer just 
takes the backup job, not the restoring. For that purpose you still 
use bru, and it always expects tape 1 at the first place.
(Disclaimer: Sorry if I missed a trivial hint in the 'manual'.)

Reinhard