“…Pace-related: automatic pauses, pauses controlled by the learner, type of pauses, fast pace. Interactive features [11, 15, 20, 33, 34, 41, 46, 47, 51, 53, 56, 62, 82, 84, 91, 100, 106, 110, 113, 114, 118-120, 125, 129, 130, 132, 142, 149-151, 154, 157, 162, 172, 175, 178, 188, 199, 208, 210, 217, 222, 234, 238, 240, 247-250, 259, 277] Quizzes embedded in the video, virtual reality and 360-degree characteristics, in-video annotations, feedback to the learner, games, hyperlinks, interface elements for navigation Production style [6,30,42,45,49,55,56,87,88,93,94,136,140,180,181,190,191,197,207,212,214,223,224,229,230,236] Khan-style, with a talking head, dialogue-style or monologue-style, slide-based, with animations, paper-based explanations, classroom-style videos, Instructional design and principles [5,58,60,75,95,101,135,140,141,169,185,212,226,241,246,...…”