docs: def writeParams(rawfilepath, outputpath, isolationWindow, coElute=0):
      """Generate and write a pParse parameter file.
  
      :param rawfilepath: location of the thermo ".raw" file
      :param outputpath: path to the output directory of pParse
      :param isolationWindow: MSn isolation window that was used for the
          aquisition of the specified thermo raw file
      :param coElute:
  
      :returns: file path of the pParse parameter file
      """
      paramText = generateParams(rawfilepath, outputpath, isolationWindow,
                                 coElute)
      filename, fileext = os.path.splitext(os.path.basename(rawfilepath))
      paramPath = aux.joinpath(outputpath, filename+'.pparse.para')
      with open(paramPath, 'wb') as openfile:
          openfile.write(paramText)
      return paramPath