[M4IF Technotes] about RVLC

[Wu, Gang]

hi,
would you please help me understand the standard clearly about RVLC,
in the standard, I am confused with the strategies for determining which MB
to been discarded.
             in standard(detail see page 422 in standard)
	L1  : Number of bits which can be decoded in a forward decoding.
	N1 : Number of MBs which can be completely decoded in a forward
decoding.
	f_mb(S): Number of decoded MBs which S bits can be decoded in a
forward direction.
                  (Equal to or more than one bit can be decoded in a MB,
f_mb(S) counter if up)
	what is  the relationship between N1 and f_mb(L1) ?  
                       (1)N1 ==  f_mb(L1). 
                       (2)N1 == f_mb(L1) ro N1 == f_mb(L1) -1.
                       (3)others.
It's very important to implement the strategy. especially in strategy 3.
maybe N-b_mb(L2)>=N1?  am I right? 
thanks very much for you help.
Gang