https://www.asha.org/Practice-Portal/Professional-Issues/Augmentative-and-Alternative-Commuication/#collapse_1
https://montech.ruralinstitute.umt.edu/aac-etiquette-essentials-chatting-with-someone-using-tech-to-talk/
https://www.communicationmatters.org.uk/what-is-aac/
https://youtu.be/C7GSgpjOwfI
(2:34)