Depending on the sort and merge results you want to achieve, you may need to recompile programs and set a new environment
               variable: 
            
            
            
               
               - To use Micro Focus-style sign representation for data items, compile your programs with the -Dcm (Data Storage Options) switch. 
               
- To obtain the behavior of SORT...WITH DUPLICATES IN ORDER, set the following environment variable: 
COBSW=+S
            Note:  You must set COBSW even if the COBOL program already specifies the WITH DUPLICATES IN ORDER phrase.