The materialid table

The same number means the same material in the render, in Weathering and in HRLW Bodies. 0, a number past the table, or no attribute: the HRLW Geometry POP's own Material Preset (or Custom settings) and Weathering Material, and the Bodies POP's Material menu. Liquid numbers leave a body on its Material menu.

Preset Scale applies to the liquids' and wax's depths here too. materialid is read by HRLW Geometry POPs (and by HRLW Bodies and HRLW Fracture, which pass it on). Sphere primitives weather with the HRLW Geometry POP's own Weathering Material.