In the Maximum number of Edit clipboards list, click on the number you want to allow.
This is the maximum number of edit clipboards allowed. Edit clipboards are used by the Edit CUT and PASTE commands and are kept in data spaces that last the life of the TSO session. Data spaces are allocated by the CUT command and released by the PASTE command, and are paged out when not in use.
The range is 1 - 11. The default is 11.
keyword MAXIMUM_NUMBER_OF_EDIT_CLIPBOARDS