Non-Manual features

Signs which are incorporated into the language, but do not use the hands are called Non-Manual features . Non-Manual features may include:

• Facial expression 
• Eye gaze
• Mouth gestures 
• Mouthing of English words
• Movements of head and body 

Often, these non-manual features are combined with hand-actions to produce meaning. This combination of elements has been called called 'multi-channel signs'. (Johnston & Schembri, 2007, p98)

Johnston, T., & Schembri, A. (2007). Australian sign language (Auslan): an introduction to sign language linguistics. Macquarie University ResearchOnline.