Where are influence and mapping settings of a texture saved? I just did the following:

&nbsp;&nbsp;I created one material and one texture. I applied this texture to 5 slots and, which is nice, can assign different settings to each instance of the texture (influence, mapping etc).

&nbsp;&nbsp;Does that mean texture slots are a data block? It can't be in either the texture or the material, since I only have one of each. How is that organized internally?
You're right if you switch the Properties View to Datablocks you can examine the datastructure. 

You find the per slot settings (Texture Layers) under /Materials/MaterialName/Textures /TextureName.
Each texture slot has its own settings.



How the different settings influence the resulting material is controled by the influence sliders of the checked properties and the Blend Mode setting.