A good A.S.L. performance prioritizes dynamics, phrasing and flow. The parameters of sign language — hand shape, movement, location, palm orientation and facial expression — can be combined with elements of visual vernacular, a body of codified gestures, allowing a skilled A.S.L. speaker to engage in the kind of sound painting that composers use to enrich a text.

This article used to be published on AMP, by the way. No longer! Tells a lot about AMP reliability.