During a JCL sort, line-sequential files are treated as variable-block. If you would like them to be treated as fixed-block
                  files, set MFJSLSEQFB=ON. 
                  	  
               
            
 
            	 
            
               		
                If the concatenation combines LSEQ and FB files, and the first concatenated file is FB, you must also set SETSORTTYPE=2.
                  		
               
               	 
             
            	 
            
               Parameters
 
               		 
               		
                
                  		   
                  			 
                  - ON|OFF 
                     			 
                  
- When set to ON, line-sequential files are treated as fixed-block files during a JCL SORT; when set to OFF, line-sequential
                     files are treated as variable-block. 
                     			 
                  
- The default is OFF. 
                     			 
                  
  
            	 
            
               Example
 
               		 
               		SET MFJSLSEQFB=ON