code/modules/paperwork/paper.dm

MAX_PAPER_LENGTH	Paper also scraps of paper
/obj/item/paper	Paper is now using markdown (like in github pull notes) for ALL rendering so we do loose a bit of functionality but we gain in easy of use of paper and getting rid of that crashing bug
/obj/item/paper/construction	WHHHHY This does the overlay stuff Construction paper

Define Details

Paper also scraps of paper

lipstick wiping is in code/game/objects/items/weapons/cosmetics.dm!