Top Descriptors overlap reading Contains patterns where overlapped objects make determining note order and/or timing difficult. , alt Colloquial term for maps which use rhythms that encourage the player to alternate notes. Typically distinct from burst or stream maps. , symmetrical Employs symmetry within the map design, often mirroring elements along the horizontal centreline. , flow aim Patterns with fully continuous cursor movement, usually due to a combination of wide angles and little time between objects. , storyboard Contains a storyboard that enhances gameplay experience.