Use the  VERIFY  command  to  scan  a  dictionary  file  for  damaged
  dictionary  directories,  objects, and history lists.  You can have a
  report of the scan written to a listing file or to your terminal.  To
  verify  the  main dictionary file, you must have VMS SYSPRV or BYPASS
  privilege.  To verify a subdictionary file,  you  need  only  be  the
  owner of the file.

  The default dictionary file is SYS$DISK:CDD.DIC.

  Command Syntax:

  VERIFY [qualifiers] file-specification