If you have the "Instant Quest Text" option turned on, you are forced to wait until the entire quest description scrolls, before you can accept the quest. This causes several annoyances, particularly when trying to accept party-shared quests, or when you cannot accept a quest due to full quest log.
This AddOn makes it possible to skip the scrolling text. When the "Accept" button is greyed out, clicking it will immediately reveal all quest text and activate the button, making it possible to instantly accept the quest.