BleepingComputer.com: What do these settings mean ?

Hey guys i just want to know what these settings mean:
Game: IL2 Sturmovik


Use Alpha
Use index
polygon stipple
disable Apl extensions
use dither
use clamped sprites
draw land by triangles
use vertex arrays


Extensions:
multitexture
combine
secondary color
vertex array extension
clip hint
use palette
texture anisotropic extension
texture compress ARB extension

Bump.

Oh my word, each heading could spawn a lengthy reply!
You'll just have to Google for this one, I think.

I remember IL2 Sturmovik from years past, but always preferred
MS Combat FS 1 , 2 & 3 (particularly 2 for its ease of modding).
(They still run great under XP).

Are you running Sturmovik OK; I found the default settings OK,
but it's a long time since I ran it on an older computer, Win 98, I think.

Still gaming at '94' -

I just want to know because I want to put it on highest graphics.

I'll have to leave it to anyone who is prepared to give an explanation for each heading,
or the people who currently play this game.

Googling "best settings for IL2 Sturmovik" produces quite a bit
of useful 'settings' information and may apply to your own video card.

Ok thanks Petewills