I create all of my Layers with the first four digits of their CSI code and a minimal amount of words that describe the work. For example, any layers associated with cast-in-place concrete start with "03 30 Concrete", while any Layers associated with underground water lines installed by an Earthwork contractor start with "33 10 Water". Bluebeam allows Layers to be sorted alphabetically by simply clicking a box. It would be greatly appreciated if Bluebeam would also allow Layers to be sorted numerically, in the same manner as they are alphabetically.