- To run the programs main.sing and procedures. sing you must have 
  Singular 2.0.3 installed in your computer. 
- Make sure the files main.sing, procedures.sing and sums.exe are in the same directory.
- Open a DOS command prompt and go to the directory containing the files.
  > cd directory_name
- Execute main.sing with Singular and observe the output generation.
  > singular main.sing
- Execute sums.exe and observe the output generation.
  > sums



