kwebtoon1-4, Exercise 1: The scroll

Model answer:

Format: each episode is one long vertical strip on an "infinite canvas" rather than separate pages, easy to read on a phone; scrolling brings new panels into view, suited to gradual, continuous storytelling; the scroll function manipulates the perception of time, allowing cinematic effects such as fade-ins and fade-outs; usually in colour; some have music, animation or interactive motion.

Two accounts: the Webtoon article credits Kang Full with revolutionising the vertical scroll in 2003 (Soonjeong Manhwa on Media Daum); the Webcomic article says JunKoo Kim implemented an infinite scrolling mechanism in the Webtoon platform in 2004 (the "infinite canvas" idea is credited to Scott McCloud).
Not necessarily in conflict: they may describe different steps - a long-form comic in scroll form, and a scrolling mechanism built into a platform - and they name different people at different places.

Sources: Wikipedia, Webtoon; Webcomic.