They will also include a traceback so you know from where they are called.
This is purely for debugging and for those who wants to optimize the game furthermore.
If you're playing the game normally, don't take this mod and use No Print instead.
Note this mod will override the No Print mod changes.
If you plan to use it:
Be aware Wilko left off a useless print in MenuSetup.lua (mods/base/lua/MenuSetup.lua). You might want to get rid of it to not being spammed by logs.