2-Letter Commands
github.com
github.com
Also, in Autocad, one could setup their own profile of commands (I cant recall what the file/procedure was called now) - but I always had two letter commands I would setup. Some were setup as an alias that would take a command that was based on the right side of the KB such that I didnt have to slide over to the right side to hit a key or require my right had to leave the mouse. It was a great workflow efficiency enhancer.