 a field. coded frame: A coded representation of a frame. coded picture: A coded representation of a picture. A coded picture may be either a coded field or a coded frame. Coded picture is a collective term referring to a primary coded picture or a redundant coded picture, but not to both together. coded picture buffer (CPB): A first-in first-out buffer containing access units in decoding order specified in the hypothetical reference decoder in Annex C. coded representation: A data element as represented in its coded form. coded slice data partition NAL unit: A NAL unit containing a slice data partition. coded slice NAL unit: A NAL unit containing a slice that is not a slice of an auxiliary coded picture. coded video sequence: A sequence of access units that consists, in decoding order, of an IDR access unit followed by zero or more non-IDR access units including all subsequent access units up to but not including any subsequent IDR access unit. component: An array or single sample from one of the three arrays (luma and two chroma) that make up a field or frame in 4:2:0, 4:2:2, or 4:4:4 colour format or the array or a single sample of the array that make up a field or frame in monochrome format. complementary field pair: A collective term for a complementary reference field pair or a complementary non-reference field pair. complementary non-reference field pair: Two non-reference fields that are in consecutive access units in decoding order as two coded fields of opposite parity and share the same value of the frame_nun syntax element, where the first field is not already a paired field. complementary reference field pair: Two reference fields that are in consecutive access units in decoding order as two coded fields and share the same value of the syntax element, where the second field in decoding order is not an IDR picture and does not include a memory_management_control_operation syntax element equal to 5. context variable: A variable specified for the adaptive binary arithmetic decoding process of a bin by a