Ease fully
Release a sail control line completely.
How to sign
Use Dominant R-hand: sheet rope classifier. The base or passive hand is Relevant sail and clew locus established. Set the sheet taut. Start at the current crew-side rope position. Move outward in one long continuous path and fully open the grip. End with visibly greater slack than EASE SLIGHTLY. Set the relevant sheet. Move the R-hand rope outward in a long, continuous path and open the grip fully at the end; the larger path distinguishes this from ease slightly.