lt: /tmp/eop_kal.dub
 
3. Make LOD file: If you answer yes, then you have the following
   additional options: (Default yes)
 
   A. LOD file name: Name of the output file to contain LOD data.
      Default is /tmp/lod.dat
 
   B. Make Plot file: If you answer yes, it will create a pgplot control
      file. Default is /tmp/eop_kal.plt
 
4. Monitor progress: If you answer yes, it will keep you posted of
   its progress. Default is Yes.
 
5. Use only NAVNET, Polaris, IRIS: If you answer yes, then
   it will 