VISUAL GRAMMAR
Many symbols are used in comics to enhance the viewer’s understanding of what the characters are feeling, like punctuation marks for pictures. Perhaps a love heart to show romantic intentions, or a light bulb when someone has a bright idea. Manga has some unique examples: a sweatdrop for nervousness or embarrassment, a hash mark for raised veins on the forehead when someone is angry, and little spirit wisps gathering when someone is feeling depressed.