In classical music.
A bird's eye, be cautious on the fermata in orchestral music.
Is used in a) orchestral music and b) solo music.
a) Bob saw a fermata on the next note, so he made sure to look up at the conductor to know when to stop playing that note.
b) Bob saw a fermata on the next note, so he made sure to indicate to his accompianist when the next note was to be played.