All light sources will produce a configurable amount of dust. The dust also has physics! Highly customizable via in game config menu.
Dust created from lanterns in the night
Dust created from light coming from the lava pool
dust created from torches lighting up the dark cave
Dust created from the campfire at night
Sporelike dust in lush caves
Heavier dust that spawns in deserts
Snow dust
Modded items work too!
Guide that shows when you click the format guide button
It shows you which variable you need to add, what it expects and what the delimiter (separator between variables) should be
What the config screen looks like