Allows automatic long-distance travel using auto-forward and auto-jump or stairs by preparing special roadways. This allows players to build travel networks that can be traversed unattended without the use of fast-travel mods.
When using auto-forard and pointed close enough to one of the four cardinal directions, players will "snap" to traveling exactly along that cardinal axis.
When a tunnel turn is detected (a 90 degree angle in the path surrounded by walls) the player will automatically turn and continue along the new direction, providing a means of traveling more complex routes.
Only works well with desktop game clients, as mobile clients currently may lack the auto-forward feature.