r_setting question

1)

what is the differecen or what affect has the following thing?

seta r_ati_truform_normalmode "GL_PN_TRIANGLES_NORMAL_MODE_LINEAR"
seta r_ati_truform_pointmode "GL_PN_TRIANGLES_POINT_MODE_LINEAR"

Or

seta r_ati_truform_normalmode "GL_PN_TRIANGLES_NORMAL_MODE_NEAREST"
seta r_ati_truform_pointmode "GL_PN_TRIANGLES_POINT_MODE_NEAREST"

2)

And the choise you gonna make is that also depending on:
seta r_textureMode "GL_LINEAR_MIPMAP_LINEAR"
or is this the only choise you can make for this setting?

Already thncx to you all.

PS if possible can some one show me some screens where we can see te difference in?

Greetz
BrCh

*Edited the error my bad no gimme feed back thnx