Singing Continue the practice of using the musical-note icon surrounding the caption. Multiple Speakers On Screen Where multiple speakers appear on the screen, placement should be used to distinguish among them. Explicit identification should be used in combination with placement if dialogue is fast, if faces are obscured, if characters are moving, or if other circumstances could confuse the viewer. If the character cannot be identified by name, then a descriptor should be provided. Other formats are probably uncontroversial.
Titles Use quotation marks when indicating the title of a book, movie, etc.
Audience Reaction Audience reaction should be captioned. This is particularly important where the reaction itself becomes part of the plot or comedy. Audience laughter should also be described. This length of exposure was not tested. Conveying Emotion Where strong emotion is conveyed, the emotion should be described with the caption.