Modding Questions - Shattered Realms

[clark]

I have another SectType.txt question:

Physical Type := Planet
Picture Num := 301
Description := Massive constructed sphere surrounding a star which is the equivalent of 10 large planets.
Planet Size := Sphereworld
Planet Physical Type := Gas Giant
Planet Atmosphere := Carbon Dioxide

The planet size listed here is "Sphereworld", yet this isn't listed as a Planet Size type in the Secttype.txt files

Here are the listed ones:

Allowable Values for Planet Size:
Asteroids, Tiny, Small, Medium, Large, Huge

Now, what this tells me is that we can mod it so Asteroids are colonizable, or even warppoints (or am I way off)? Is the Sphereworld size missing just a typo, or is something else going on?

What if I change the names of "Allowable Values for Planet Size"- would the game recognize the new ones I define, or is it merely just a descriptive aid with no bearing on the txt files themselves?