80. Apparatus according to claim 79, including means for storing with each record an indication of the manes which are active at the end of each record.
80. Apparatus according to claim 79, including means for storing with each record an indication of the manes which are active at the end of each record. 81. Apparatus according to claim 80, further including means assigning a hierarchical level to said first name and to any other assigned names which have been defined, and wherein said means for means for storing with each record includes means for organizing by hierarchical levels the stored indication of names which are active at the end of the record.