The array returned (on a RH6.2 box) is:
soft core = 0
hard core = unlimited
soft data = unlimited
hard data = unlimited
soft stack = 8388608
hard stack = unlimited
soft totalmem = unlimited
hard totalmem = unlimited
soft rss = unlimited
hard rss = unlimited
soft maxproc = 2048
hard maxproc = 2048
soft memlock = unlimited
hard memlock = unlimited
soft cpu = unlimited
hard cpu = unlimited
soft filesize = unlimited
hard filesize = unlimited
soft openfiles = 1024
hard openfiles = 1024