Adding a Gizmo Icon

Why have a normal gizmo when you can spice it up with a flashy icon that shows up in your GUI? Just add this line to your .gizmo file, as the first line in your gizmo.

Gizmo {
icon /the/location/of/your/gizmoimage.png

The .png file should be manageable, I use an image size of 90x66 pixels, and set up the image as a transparent .png file.