SHOW, CLUSTER, Qualifiers, /INTERVAL
*Conan The Librarian
/INTERVAL=seconds Specifies the number of seconds that display information remains on the screen before it is updated. By default, the interval time is 15 seconds. If you use an initialization file in noncontinuous mode and the initialization file contains a SET SCREEN command that changes the screen size, SHOW CLUSTER sets the screen to the specified size for one update interval and then sets the screen to the original size.