Halo 3 Sapien includes a decal system to decorate maps without baking the details into the map textures. Decals allow signs and scuff mark images to be moved around in the level without re-texturing and relighting the map.
Usage
Add a decal from a map. sd3 multiplayer maps have a good selection of decals.
Choose from the properties dropdown which decal it should be.
Acknowledgements
Thanks to the following individuals for their research or contributions to this topic:
- Rataz (Writing this guide)