The PROTECTONLY directive enables or disables the DOS Compatibility 
Environment (also known as the 3.x Box).  System security is improved
by placing the directive PROTECTONLY=YES in CONFIG.SYS.

Directive syntax:	PROTECTONLY = YES|NO

Default value:		NO

Multiple occurrences:	No	

Affects protected mode:	No
			
Affects real mode:	Yes

Example:		PROTECTONLY = YES

