Sets the value for the 
                  		w parameter used in date-related built-in functions. 
                  	  
               
            
 
            	 
            Affected built-in functions include: 
               	 
            
 
            	 
             
               		
               -  DAYS 
                  		
               
-  DAYSTODATE 
                  		
               
-  REPATTERN 
                  		
               
-  SECS 
                  		
               
-  SECSTODATE 
                  		
               
-  VALIDDATE 
                  		
               
               Syntax
 
               		 
               		-window "{yyyy|-integer}" 
               	   
            	 
            
               Parameters
 
               		 
               		
                
                  		   
                  			 
                  - yyyy 
                     			 
                  
- A positive four-digit integer that represents a year that starts a fixed window of time. 
                     			 
                  
- -integer 
                     			 
                  
- A negative integer used as an offset and subtracted from the current, system-supplied year. 
                     			 
                  
  
            	 
            
               Examples
 
               		 
               		-window 1976
 
               		-window "-50"