The runtime system uses the following rules to decide what the configuration file is called: 
               	 
            
 
            	 
             
               		
               - If the 
                  		  -c runtime option is used, the configuration file is the one named by that option 
                  		
               
- If the operating system environment variable A_CONFIG is defined, its value is the name of the configuration file 
                  		
               
-  The configuration file is named according to the host operating system. This depends on the operating system used by the
                  machine, as outlined in the following table 
                  		
               
 
               	 
               
                   
                     		   
                     		   
                     		  
                      
                        			 
                         
                           				
                           | System | Configuration File | 
 
                        		  
                      
                     		  
                      
                        			 
                         
                           				
                           | Windows | \etc\cblconfi | 
 
                        			 
                         
                           				
                           | UNIX/Linux | /etc/cblconfig | 
 
                        		  
                      
                     		
                  
                 
               	 
              
            	 
            CAUTION:
            Don't give a data file a name that is the same as a configuration variable name. Doing so can cause problems if you map the
               data filename through a configuration entry. For example, if you have a data file named 
               		CURRENCY, the runtime system may confuse the data file with the configuration variable of the same name, inadvertently changing the
               default currency character.