The USE statement specifies Declarative procedures to handle
  input/output errors and database exception conditions.  It can also
  specify procedures to be executed before the program processes a
  specific report group.

  These procedures supplement the standard procedures in the COBOL
  Run-Time System and OpenVMS RMS.

  Additional Information (explode) :

• 1format AFTER EXCEPTION
• 2format BEFORE REPORTING
• 3format DB-EXCEPTION