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#   Step through each term found in the parsed content and proceed wit
+h
#   term indexing
...
    ++${$self->{'_index_count'}}{$stem} unless ${$self->{'_index_stem'
+}}{$stem}++;
    ++${${$self->{'_index_frequency'}}{$stem}}{$url};
}

sub weights
{
...
        ${$self->{'_tied_weight'}}{$stem} = \%weights;
    }
}