* The name is slightly different: There might be a misspelling or a slight variation in the name. Could you double-check the source of this information?
* It's a very niche or custom-built engine: Highly specialized or one-off engines might not have widespread documentation.
* It's a fictional engine: The engine might be from a game, book, or other fictional work.
To help me find information, please provide more context: where did you encounter this engine name? Knowing the source will help determine if it's a real or fictional engine.