Saving and cataloging information on storage devices.
    (Also see Developing_programs and Executing_programs)

  APPEND            Appends one file to another.
  ANALYZE/RMS_FILE  Analyzes the internal structure of a file.
  CONVERT           Changes the attributes of a file.
  COPY              Creates a copy of an existing file or files.
  CONVERT/RECLAIM   Reclaims unused space in an indexed file.
  CREATE            Creates a new file.
  CREATE/DIRECTORY  Creates a new directory or subdirectory.
  CREATE/FDL        Creates a new file with tailored attributes.
  DELETE            Deletes a file or files.
  DIFFERENCES       Displays differences in content between two files.
  DIRECTORY         Displays the names of the files in a directory.
  DUMP              Displays the uninterpreted contents of a file.
  EDIT              Invokes TPU and runs the Extensible Versatile Editor.
  EDIT/FDL          Creates a file definition file.
  EDIT/SUM          Updates a file with multiple files of edit commands.
  EXCHANGE          Reformats files formatted by other operating systems.
  LIBRARY           Creates or modifies various kinds of libraries.
  MERGE             Merges sorted files.
  PRINT             Prints the contents of a file.
  PURGE             Deletes old versions of a file or files.
  RENAME            Recataloges an existing file.
  SEARCH            Locates a character string within a file or files.
  SORT              Sorts the data in a file.
  TYPE              Displays the contents of a file.
  RUNOFF            Formats one or more documents (text files).
  SET DEFAULT       Changes the default device and directory.
  SET DIRECTORY     Changes the characteristics of a directory.
  SET FILE          Changes the characteristics of a file.
  SET PROTECT/DEF   Changes the default protection given to files.
  SET RMS_DEFAULT   Changes the default block and buffer count values.
  SET SECURITY      Modifies the access control list (ACL), protection code,
                    and owner of a file. protected object.
  SHOW DEFAULT      Displays the default device and directory.
  SHOW PROTECTION   Displays the default protection.
  SHOW QUOTA        Displays your quota of space on a disk volume.
  SHOW RMS_DEFAULT  Displays the default block and buffer count values.
  SHOW SECURITY     Displays the name, class, and profile of a file or
                    directory. The profile lists the object's access control
                    list (ACL), protection code, and owner.
  UNLOCK            Closes a file accidentally left open.

  Type ? to display the list of HINTS.
  Type FILES_AND_DIRECTORIES to redisplay this particular hint.
  Press the RETURN key before typing a command or topic name.