For official WCA scrambles hold the Pyraminx with Yellow bottom and Green front. Uppercase letters describe one turn of one layer including the tip. For a Pyraminx, lower case letters denotes turning the tip.
If the letter is followed by an apostrophe then the turn is anti-clockwise.
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.
Layer Turns
Up
Right
Left
Video Guide: