Before you build your XML-enabled COBOL, you must insert the following code on the first line of your program before the Identification Division: 
	 
 
	 $set {preprocess | p}(prexml) [{out | o} (outname)] [warn] 
     [{preprocess | p} (ppname)] endp
 
	 where the parameters are: 
	 
 
	  
		 
		  - {preprocess | p} 
		  
- The pre-processor to be used. 
		  
- {out | o} 
			 outname
		  
- The fully preprocessed output source file, 
			 outname. This output source file contains native COBOL processed from the XML syntax. 
		  
- warn 
		  
- Cause diagnostic warnings on parsing to be presented by PREXML. 
		  
-  
			 ppname 
		  
- The preprocessor name you want to use to read source files and process COPY statements. Preprocessors can be nested. 
		  
For example: