KEPLER /HFS

          KEPLER SHOW Name /HFS File.hfs [Opacity]

      Use an Hyperfine structure file, described in File.hfs to fit the velocity
    re-aligned,  integrated  spectrum.  The corresponding hyperfine structure is
    stored in SIC structure HFS%. The optional argument Opacity can be  used  to
    specify  the  total opacity (sum over the hyperfine components), the default
    being 0.1.  If Opacity is negative, the opacity is then adjusted by the pro-
    file fitting procedure, using -Opacity as starting value.

      Fit results are available in SIC structure G_%...