This Natural profile parameter activates or deactivates new or changed Natural features supplied as selectable units. This provides you the option to activate only those features required in your environment instead of completely upgrading Natural.

Note:
Selectable units are not yet available.

Possible settings	OFF	All selectable units (Natural features) are deactivated; any keyword subparameter settings are switched off.
	Un={ON|OFF}	One or more selectable units (Natural features) are activated (ON) or deactivated (OFF) with the keyword subparameter Un: see SELUNIT Parameter Syntax. The SHOWSU system command lists all selectable units available in your Natural environment and the selectable units that have been activated. You can also use the SU line command/keyword of the SYSPROD system command to check whether selectable units are active.
Default setting	OFF
Dynamic specification	yes
Specification within session	no

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SELUNIT Parameter Syntax

The following syntax applies:

SELUNIT={OFF|({Un={ON|OFF}},...) }

Where:

n is a number from 1 to 24, each representing a specific feature as announced in Changed/Enhanced Profile Parameters in the current Natural Release Notes for Mainframes.

Example of SELUNIT Parameter

SELUNIT=(U2=ON,U4=OFF)