How to configure automatic compressed texture format value?

Not as far as I can see from the TextureImporter: http://docs.unity3d.com/Documentation/ScriptReference/TextureImporter.html But why use Automatic if you want to specify it yourself?

Thanks for your suggestion, I will try to play with TextureImorter! The matter of the question is that we use a plugin, which generates texture atlases, and the texture settings it has doesn't have all we need for all platforms (but has "Automatic Compressed"). So each time we regenerate atlases we have to make corresponding changes to a resulting (regenerated) texture atlas settings (i.e. change it's texture format). But if we had some sort of access to setting of the values of the automatic compression settings, we could set it once, configure for each platform and forget about current problems.