I wasn't aware of the existence of any notation at all! The dictionary I have uses photographs, other dictionaries and textbooks use drawings of people speaking

I wasn't aware of the existence of any notation at all! The dictionary I have uses photographs, other dictionaries and textbooks use drawings of people speaking SL. The nearest thing to a notation in this case consists of a verbal description of face and hand gestures as they are carried out in real time. I have often wondered if it would be possible to create a notation using the simplest and most abstract rendition of an actual SL speaker's signing. Lines and curves that hold the semantic essence of the movement of face, hand and posture. It would take a native speaker to be able to abstract what is truly essential to meaning, and a community to agree on its elegance and clarity. Off topic, but connected: I discovered from experience that small children can form the SL alphabet with their hands before they acquire the coordination to draw written letters. I found it very useful in teaching my children to read.