ls permission "l"?

[James R. Van Artsdalen]

I have access to a 3b2-310 running System V 2.1 (virtual memory version).  When
I did an "ls -l /usr/spool/cron/atjobs" I got this:

total 2
-r-Sr-lr--   1 james    osi          740 Sep 18 06:14 527490000.a

I know what the "S" means, but I've never seen the "l" before.  My 2.0.4 system
stores an "S" in that spot for at jobs.  Anybody know what the "l" means (or
would mean on a more appropriate file)?
-- 
James R. Van Artsdalen    ...!ut-ngp!utastro!osi3b2!james    Live Free or Die