This is how to place a decal object on the ground. And to have it glowing in the dark. This would be very useful indeed.
Placing a Decal on the Ground
Place the 10 meter user texture object on the ground.
This is what we use to have a number on the ground.
Then use these as the textures. These are the numbers used on the sides of the military towers.
Then use this material texture in the texture field. This is a an emmissive texture, this will make the numbers glow in the dark.
This is a very neat trick, you can number your helipads and have them visible at night.