A question came up elsewhere about whether dwarves have dark vision. I gave a suggestion and thought it might be good to also post it in a settings post. Since I found no thread about dwarves, I made one.
My answer on dark vision:
”To me it seems reasonable that the dwarves have some kind of dark vision since they often dwell underground. Wouldn't it be cool if dwarves were able to emit short burst of infrared (invisable to men) stroboscopic light from glands by their noses every five minutes or so? The reflections give them a snapshot of the surroundings paired with a very good visual memory that lets them keep that image until the next flash. It would give dwarves limited dark vision that would limit their mobility in darkness as well as awareness of changes or movement. The light bursts might scare some beasts and attract others that prey upon dwarves. The lenght of the dark period between bursts might depend on for instance WITS.”