I work in a medium size semiconductor company. We use to document chip spec, board parts, software procedures and other stuffs in ms word. Slowly management realised that wiki is best tool for this. Chip spec can be generated from doxygen comments. Any single change in register spec get available to software on fly through automated tools. No single engineer knows all the parts of a board/software procedures so collaboration is must. When you are looking at wiki you are sure that you are looking at most up to date content. Now I hardly open ms word and we don't have google docs.