.51 reference picture list: A list of reference pictures that is used for inter prediction of a P, B, EP, or EB slice. For the decoding process of a P or EP slice, there is one reference picture list. For the decoding process of a B or EB slice, there are two reference picture lists. G.3.52 reference picture list 0: A reference picture list used for inter prediction of a P, B, EP, or EB slice. All inter prediction used for P and EP slices uses reference picture list 0. Reference picture list 0 is one of two reference picture lists used for inter prediction for a B or EB slice, with the other being reference picture list 1. G.3.53 reference picture list 1: A reference picture list used for inter prediction of a B or EB slice. Reference picture list 1 is one of two reference picture lists used for inter prediction for a B or EB slice, with the other being reference picture list 0. G.3.54 scalable bitstream: A bitstream with the property that one or more bitstream subsets that are not identical to the scalable bitstream form another bitstream that conforms to this specification. G.3.55 sequence parameter set: A syntax structure containing syntax elements that apply to zero or more layer representations with the dependency_id syntax element equal to 0 and the quality id syntax element equal to 0 as determined by the content of a seq_parameter_set_id syntax element found in the picture parameter set referred to by the pic_parameter_set_id syntax element found in each slice header of I, P, and B slices. G.3.56 slice: An integer number of macroblocks or macroblock pairs ordered consecutively in the raster scan within a particular slice group. Each macroblock or macroblock pair of a picture or layer picture shall not be contained in more than one slice of a particular layer representation. Although a slice contains macroblocks or macroblock pairs that are consecutive in the raster scan within a slice group, these macroblocks or macroblock pairs are not necessarily consecutive in the raster scan within the picture or laye