rdf_helper

             ************************************************
             +           ----- MDL's rdf helper -----       +
             ************************************************
             +  usage:                                      +
             +   rdfhelper [options] < infile > outfile   +
             +  options:                                    +
             +   -s [filename] : select mols that match     +
             +                   props of this file. Use    +
             +                   -t to give prop tag        +
             +   -g : print rdf property. Use -t for tag    +
             +   -c : counts the number of mols in the rdf  +
             +   -t [tag] : tag of the sdf prop             +
             +   -m : converts rdf to mol                   +
             +                                              +
             +  notes:                                      +
             +   1. * (kleene star) is taken as wildcard    +
             +      in the file for props to match          +
             +                                              +
             ************************************************
             +                 VJ Sykora                    +
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