BIOgraphy IDentification number. This is the unique identifying number or record key of a given individual in the BIOGRAPHY table, assigned sequentially at the time the record is entered. The bioid is unique only within a given bibliography. Thus Iñigo López de Mendoza, Marqués de Santillana, corresponds to bioid 1031 in BETA, to bioid 1543 in BITAGAP, and to bioid 1454 in BITECA. Return to the Top of this PhiloBiblon Glossary CNUM -- Control NUMber. This is the unique identifying number or record key of a specific copy of a given text in a given manuscript in the ANALYTIC table, assigned sequentially at the time the record is entered. The CNUM is unique only within a given bibliography. Thus in BETA cnum 778 corresponds to the copy of Gonzalo de Ocaña's translation of the Libri dialogorum in Escurial MS. b.II.9; while in BITECA it corresponds to Fernando el Católico's Senténcia reial per causa de les turbacions passades, in the Barcelona edition of Jaume de Vingles, ca. 1520.