Section 2 - Prose Variation Control
[Some words are used quite a bit in the source text, and there is a risk of combining two (apparently) unrelated bits, such as a grounding beat and a bit of dialogue, that repeats this vocabulary in awkward ways. If, however, we always print these words algorithmically we can assure that they are not repeated in the same section.]
To say comforting:
say "[one of]comforting[or]reassuring[or]encouraging[at random]".