Cube Notation is letters and letter character combinations to describe specific turns on a Pyraminx. The purpose of notation is to easily describe an algorithm or a scramble.
Uppercase letters describe one 90 degree turn of one layer the letter represents.
If the letter is followed by an apostrophe then the turn is anti-clockwise.
Lowercase letters means you turn 2 layers simultaneously. So you are turning the face and corresponding inner layer.
For computer generated scrambles hold the Pyraminx with YELLOW bottom and GREEN front.
Outside Face Turns
Up
Right
Left