diff -ruN worldedge.orig/init.lua worldedge/init.lua
--- worldedge.orig/init.lua	2016-03-23 14:30:23.000000000 -0700
+++ worldedge/init.lua	2016-07-30 20:41:49.909486025 -0700
@@ -2,11 +2,13 @@
 -- TODO: Check for terrain height
 
 -- Defines the edge of a world
-local edge = 30000
+local edge = tonumber(minetest.setting_get("world_edge")) or 30000
 -- Radius which should be checked for a good teleportation place
 local radius = 2
 --------------
 
+core.log("action", "World edge: " .. edge)
+
 local count = 0
 local waiting_list = {}
 --[[ Explanation of waiting_list table