rcmds.backsts_backmax_back_stack/back will take the player using it back to his previous location before a RoyalCommands teleport. Any teleport
from RoyalCommands will be registered in /back for convenience.
If enabled, a stack of previous locations is visible from /backs, and the number displayed next to each location
can be used as /back # to go to that particular previous location.
/back - Takes the player to his most recent previous location.
/backs - Displays the player’s previous locations.
/back 3 - Take the player to his third most recent previous location (as can be viewed from /backs).