तो क्या हुआ , जो एक ट्रेन निकल गयी तुम्हारी, जिंदगी के ट्रैक मे अगली ट्रेन भी आएगी। - karthik

Railway passengers often confuse with different symbols shown as part of their pnr status.Here is the description for various symbols:
LEGENDS
Symbol------ Description
CAN / MOD--- Cancelled or Modified Passenger
CNF...
more...

/ Confirmed--- Confirmed (Coach/Berth number will be available after chart preparation)
CK--- Tatkal Quota
CKWL--- Tatkal Waiting List
The difference between normal waiting list and CKWL is that when the normal waiting list moves up it goes to RAC category whereas CKWL means when the waiting list moves up you can expect confirmed berth.
RAC--- Reservation Against Cancellation
WL #--- Waiting List Number
RLWL--- Remote Location Wait List
GNWL--- General Wait List
PQWL--- Pooled Quota Wait List
REGRET/WL--- No More Booking Permitted
RELEASED--- Ticket Not Cancelled but Alternative Accommodation Provided
R# #--- RAC Coach Number Berth Number