In the absence of other affordances, icons provide a clear indication that a gesture can be performed.

University of Michigan - Ann Arbor

How elements look and behave should indicate if gestures can be performed on them. Visual cues indicate that a gesture can be performed, such as showing the edge of a card to suggest it may be pulled into view

Indicate gestures


The edge of a sheet invites the user to pull it into view.

Example 1 

Example 2 

Animate elements before the user interacts with them to suggest a gesture.

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