Scaled Textures?

Hey, is it possible for Eternity to scale textures?
SLADE has the option to scale textures in the TEXTURE lump. If for example I define a 256x256 and give it a scale of 16x16, SLADE shows it should be displayed as a 128x128 pixel texture, but I wasn't able to produce this effect yet.
Is this feature only available in ZDoom?

As far as I know not. Only sprites can be scaled.