Comet parameter: show_fragment_ions
         
         - This parameter affects .out files only i.e.
         output_outfiles set to 1.
         
- This parameter controls whether or not the theoretical
         fragment ion masses for the top peptide hit are calculated
         and dislayed at the end of an .out file.
         
- Valid values are 0 and 1.
         
- The default value is "0" if this parameter is missing.
         
Example:
         
show_fragment_ions = 0
         
show_fragment_ions = 1