UI Setup Helper is a UI setup helper. It lets you cover the game world with a transparent overlay and display a couple of lines for aligning UI elements, using the following commands:
/ush dark: draw a dark overlay
/ush light: draw a light overlay
/ush align: draw alignment lines at the location of your mouse cursor
/ush follow: draw alignment lines that move with your mouse cursor
/ush clear: clear the screen
/ush: light + follow, or clear if already active
Typical usage: /ush, then find a place where you want UI elements lined up, then /ush align to stop the lines from moving with your mouse, then line up your elements, then repeat as necessary, then /ush dark to make sure your UI will still look good in a darker area.