signing
"Signing" is the present participle (the -ing form) of the verb "sign." It has a few distinct and very useful meanings — from writing your name, to using sign language, to officially agreeing to a contract. Here are the most common ones.
Sign language is a visual language used by people who are deaf or hard of hearing. When someone is 'signing,' they are using their hands, face, and body to communicate — instead of speaking words out loud.
everyday language, accessibility, education · Modern, widely used
The interpreter was signing everything the speaker said so the deaf audience could follow.
The teacher is signing the instructions for the students who cannot hear.