how the facing's woring?

[Ariinui]

my question's simple: how does work the NPC(id).facing function's working?
i know that id if the npc id, my question is more about the boolean: i know of boolean's working, but which side's the true and which one's the false?

[PvP_FINGER]

1(true) - left
0(false) - right

[Eri7]

1(true) - left
0(false) - right

Its the opposite , .facing = 0 means left and .facing = 1 means right

[Ariinui]

thanks but i've learned it already :P but i'm sure that it'll be usefull for other persons