This monograph presents analyses of filled and unfilled pauses, cut-offs, repair, discourse markers and other phenomena often referred to as disfluencies in the context of advanced language learners' PowerPoint presentations. It adopts a multimodal perspective to demonstrate the functions of these elements in interaction. Paired with gaze shifts, pointing gestures and posture shifts, they act as facilitators of joint visual orientation, mutual understanding, and accountable actions. Therefore, this volume suggests the name cofluency to reflect their potential functionality. Cofluencies are...