Nonverbal cue include all the communication that need not be spoken in order to determine the meaning. This includes body movement, nuances of the voice, bodily orientation, etc.). The nonverbal cue of warmth or hotness in this item is
"shaded her eyes with her open hand on her brow".
The first poet to popularize the sonnet form is Francesco Petrarch, whose sonnets subsequently inspired Earl of Surrey, Shakespeare, Edmund Spencer, and many others to write sonnets.