The COBOL specification was revised three times in the five years after its publication. COBOL-60 was replaced in 1961 by COBOL-61. This was then replaced by the COBOL-61 Extended specifications in 1963, which introduced the sort and report writer facilities.  The added facilities corrected flaws identified by Honeywell in late 1959 in a letter to the short-range committee.  COBOL Edition 1965 brought further clarifications to the specifications and introduced facilities for handling mass storage files and tables .