Robot-Heard names a function, with lambda list (ROBOT SPEAKER MODE HEARD):
Robot ROBOT heard SPEAKER in mode MODE say HEARD.
SPEAKER is a Toot character. MODE is the mode in which ROBOT has placed its conversation with SPEAKER, and is typically a keyword, but defaults to NIL. HEARD is an array of the most recent utterances from SPEAKER, in the order in which they were received; thus, the latest utterance is (LASTCAR HEARD).
Defined in file src/characters/robo-toot.lisp.