A few questions on various config options, if nobody minds.

I'll do my best to be direct.

In the Galacticraft config file, there is a section to allow spawning of other mods' ores on Galacticraft planets, what is the syntax if I wanted to say, spawn Astral Silver there? Or would it be better to do this directly through CoFH Core's Ore Generation and specify which dimension to spawn them in, or would that leave them discolored to the surrounding area?

Similarly, there is an area for the Immersive Engineering Excavator to determine by mod, what is the syntax if I wanted to put Metallurgy in there as well?

And lastly, I am going to play around with this but... the Landmass Percentage and Ocean Filler parameters in the Biomes O' Plenty Terrain Gen config, what exactly is the effect of them?