Recursive printing.

["BACH::GREEK" <greek%bach.decnet@hudson.dec.com>]

Dan Hoey has certainly hit upon some of the problems with recursive 
printing.  And he has suggested, as we have, that depth abbreviation 
could be handled automatically.

The right way to decide if a print is recursive is not by using 
heuristics (like switching streams or entering break loops), but by 
explicitly specifying it with recursive-p.  The heuristics will only be 
a hack.  However, it certainly isn't clear how to add recursive-p to all 
the appropriate functions.

Perhaps we can agree that depth abbreviation is to be done 
automatically, but let's not specify how to do it.  

------