File selection options (FILES statement)

Files can be selected for an ARCHIVE run by specifying

• fully or partially qualified file names (NAME operand)

• ranges of fully or partially qualified file names (NAME, EXCEPT and THRU operands)

• volumes (FROM operand)

• file attributes, which can be specified with the CHANGED, BACKUP and UNUSED operands in the SAVE statement. File attributes comprise information on:whether or not the file has been modified since the last save.

  a)	Only files modified since the last save run are saved if the CHANGED=YES operand is specified.
  b)	whether only pages that contain changes are to be saved. If CHANGED=YES,LARGE is specified, only the pages modified since the last full save operation are saved. Before this can be done, however, the attribute “LARGE” must be entered in the catalog with the command /MODIFY-FILE-ATTRIBUTES ...,SAVE-PAGES=MODIFIED-PAGES.
  c)	how frequently a file is to be saved (BACKUP operand).
  d)	when a file was last accessed to be read or changed (UNUSED operand).