The Mystic Realms HUD is uniquely made by and for TMR exclusively by our wonderful Sim Turtle. See the manual on how to use it bellow!
Going clockwise on the hud, the buttons go as follows: HUD HP, Sit Rezzer, Experience Teleport, Dice/Combat, Character, Settings, and Help. Clicking the main HUD button you can hide these buttons behind the HUD itself. Hit Alt+Shift+H if you ever wish to hide your entire HUD interface and vice versa to show it again.