The data pointed to by this entry is appended to the data pointed to by previous entries (if any) in this buffer group. If a (0,0) entry is encountered in accumulate state, the data becomes part of the single RU being accumulated; accumulate state is maintained. If a (0,0) entry is encountered in split state, the data is added to the data that is split by VTAM® when a sufficient amount is gathered; split state is maintained. If a (0,0) entry is encountered in reset state, this entry begins a new buffer group and split state is entered. The data is the initial part of the data that is split by VTAM when a sufficient amount is gathered.