What is the difference between settings.cfg "QUALITY_PRESET" and "TEXTURE_QUALITY"?

[HafCoJoe]

From the KSP config:

...
FULLSCREEN = False
QUALITY_PRESET = 5
ANTI_ALIASING = 2
TEXTURE_QUALITY = 1
SYNC_VBL = 1
...

What does Quality preset do and what does Texture quality do? I know that Texture Quality is the in game "Full-res" vs. "Half-res" and lowering the number means increasing resolution, but what does quality preset do that is different?

And more specifically, which one increases the resolution of the skybox?

[vexx32]

Texture Quality will do the skybox.

The other one... is, I think, the Render Quality slider in the Settings. It affects a lot of things, but I don't precisely know what.

[HafCoJoe]

Ahhh... I've been making a high res version of the default skybox and I've been wondering which setting does which for a while now. Thanks a ton Vexx! Rep!