I have no idea on how to title this

Does json execute align xyz positioned ~-2 ~-2 ~-2 as @e[dx=5,dy=5,dz=5] check for entities in a 5 by 5 by 5 zone around the center of the block in which the command was executed? If yes, are the entities that are precisely on the border of the block (like a block display of the size of a block that is centered on the block that it's in) included in the search or not?