Auxiliary operations for the preprocessor.
                checkRequiredImport
                  ::  String -> String -> [String] -> IO ()  Checks whether a module is in the import list.  | 
              
            
                setFunMod
                  ::  String  Name of the set functions module.  | 
              
            
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                       Checks whether a module is in the import list. Aborts with an error if this is not the case.  | 
                  
                
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                       Name of the set functions module. 
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