If your program only needs to address memory below the line, you should:
	 
	 
		- Set Max. memory below 16Mb line to the maximum amount of memory below the line that your program requires. The default is 3Mb and the maximum is 16Mb. 
		
 
		- Set Addressing mode to AMODE(24) for the main program and for each program that the main program loads. 
		
 
		- Omit the 
		  LOC parameter from all 
		  GETMAIN or 
		  STORAGE OBTAIN macros issued by your program.