South-east rule

The south-east rule, also known as the Z-X rule, is an unintentional mechanic in Minecraft wherein various effects occur based on the cardinal directions, specifically in a south-east variant.

Effects
The following list contains effects that happen in Minecraft, relating to the south, east, or south-east cardinal directions.
 * Rails will curve south or east when they are initially placed at a "T" intersection or a "+" intersection. They will also curve away from the south or east when powered.
 * An exception to this is if there is an intersection on a downhill rail track, the minecart will continue the downhill track, even if the south-east rule applies. (see Rail)
 * Any mobs that are spawned by spawn eggs, monster spawners, the player, or by breeding, will always appear to be facing the southern direction.
 * TNT cannons tend to fire farther when facing east or south. Designs that don't account for spread also exhibit horizontal drift eastward or southward as well.
 * Many bugs cause problems relating to south and east, such as villagers trying to cram into the house that is mostly in the southern-eastern area of the village.
 * Levers oriented north or south will always have the off state facing south, and levers oriented east or west have the off state facing east.