Lighting Candles Business Activity?

[Knight Captain]

I was poking around an export of the BG usecode. As part of that I set the Avatar's current business activity as Preach, and it would change to Loiter. Then after some movement, he would turn on an unlit light source like a candle, then Avatar would go to Activity 33 (null).

The barks for this include "Much better!" or "Ah, 'tis better." or "I can see again!" Yet if I search though the exported usecode, I don't see those barks anywhere.