Samsung PN51E6500EFXZA - Manual (Page 194)

the PG-13 category, then R , NC-17 and
X will automatically be blocked also.
N To unblock a category, click the lock
icon.
Canadian English Rating : You can
block TV programs based on their
Anglophone Canadian ratings.
Canadian English Rating displays a
column with locks and the following
ratings categories:
–
C : Programming intended for children