Map Editor Manual or Readme

[Tnarg]

Does any one have a clue if there is a readme file or a manual to explain the map editor. I'm trying to figure out how the planet abilities, system abilites, and if one can connect one system to another in the editor. Also I read a post by the Taz-in-Space fellow, saying that you can place ring and shere worlds on the map. That would be cool. But when the computer places players, will any of them be likely to be placed on the world to start with.

I'm trying to make a gem of a system populated eons ago by an advanced species, but they're dead now. So I want it as a prize planet, maybe with some ruins, and other goodies. Thanks! And thanks for the great idea Taz.