"reject", "other" in results_callback(words)?

[Jason Veldicott]

Upon words being spoken, in the results_callback method in GrammarWrapper, the spoken words are usually received.  But there are two tests on these words, for matching to 1) "other" and 2) "reject" (plain strings, not tuples).  But this never seems to occur.  DNS never seems to send either of those strings (in DNS v10 and 11). Including when "scratch that" is said. Maybe they were only in play in earlier versions of DNS. Any comments appreciated.

Thanks

Jason