diff --git a/basic_machines/mark.lua b/basic_machines/mark.lua
deleted file mode 100644
index 9b55cf6..0000000
--- a/basic_machines/mark.lua
+++ /dev/null
@@ -1,154 +0,0 @@
--- rnd: code borrowed from machines, mark.lua
-
--- need for marking
-machines = {}; 
-
-machines.pos1 = {};machines.pos11 = {}; machines.pos2 = {}; 
-machines.marker1 = {}
-machines.marker11 = {}
-machines.marker2 = {}
-machines.marker_region = {}
-
-
---marks machines region position 1
-machines.mark_pos1 = function(name)
-	local pos1, pos2 = machines.pos1[name], machines.pos2[name]
-
-	if pos1 ~= nil then
-		--make area stay loaded
-		local manip = minetest.get_voxel_manip()
-		manip:read_from_map(pos1, pos1)
-	end
-	
-	if not machines[name] then machines[name]={} end
-	machines[name].timer = 10;
-	if machines.marker1[name] ~= nil then --marker already exists
-		machines.marker1[name]:remove() --remove marker
-		machines.marker1[name] = nil
-	end
-	if pos1 ~= nil then
-		--add marker
-		machines.marker1[name] = minetest.add_entity(pos1, "machines:pos1")
-		if machines.marker1[name] ~= nil then
-			machines.marker1[name]:get_luaentity().name = name
-		end
-	end
-end
-
---marks machines region position 1
-machines.mark_pos11 = function(name)
-	local pos11 = machines.pos11[name];
-
-	if pos11 ~= nil then
-		--make area stay loaded
-		local manip = minetest.get_voxel_manip()
-		manip:read_from_map(pos11, pos11)
-	end
-	
-	if not machines[name] then machines[name]={} end
-	machines[name].timer = 10;
-	if machines.marker11[name] ~= nil then --marker already exists
-		machines.marker11[name]:remove() --remove marker
-		machines.marker11[name] = nil
-	end
-	if pos11 ~= nil then
-		--add marker
-		machines.marker11[name] = minetest.add_entity(pos11, "machines:pos11")
-		if machines.marker11[name] ~= nil then
-			machines.marker11[name]:get_luaentity().name = name
-		end
-	end
-end
-
---marks machines region position 2
-machines.mark_pos2 = function(name)
-	local pos1, pos2 = machines.pos1[name], machines.pos2[name]
-
-	if pos2 ~= nil then
-		--make area stay loaded
-		local manip = minetest.get_voxel_manip()
-		manip:read_from_map(pos2, pos2)
-	end
-	
-	if not machines[name] then machines[name]={} end
-	machines[name].timer = 10;
-	if machines.marker2[name] ~= nil then --marker already exists
-		machines.marker2[name]:remove() --remove marker
-		machines.marker2[name] = nil
-	end
-	if pos2 ~= nil then
-		--add marker
-		machines.marker2[name] = minetest.add_entity(pos2, "machines:pos2")
-		if machines.marker2[name] ~= nil then
-			machines.marker2[name]:get_luaentity().name = name
-		end
-	end
-end
-
-
-
-minetest.register_entity(":machines:pos1", {
-	initial_properties = {
-		visual = "cube",
-		visual_size = {x=1.1, y=1.1},
-		textures = {"machines_pos1.png", "machines_pos1.png",
-			"machines_pos1.png", "machines_pos1.png",
-			"machines_pos1.png", "machines_pos1.png"},
-		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
-		physical = false,
-	},
-	on_step = function(self, dtime)
-		if not machines[self.name] then machines[self.name]={}; machines[self.name].timer = 10 end
-		machines[self.name].timer = machines[self.name].timer - dtime
-		if machines[self.name].timer<=0 or machines.marker1[self.name] == nil then
-			self.object:remove()
-		end
-	end,
-	on_punch = function(self, hitter)
-		self.object:remove()
-		machines.marker1[self.name] = nil
-		machines[self.name].timer = 10
-	end,
-})
-
-minetest.register_entity(":machines:pos11", {
-	initial_properties = {
-		visual = "cube",
-		visual_size = {x=1.1, y=1.1},
-		textures = {"machines_pos11.png", "machines_pos11.png",
-			"machines_pos11.png", "machines_pos11.png",
-			"machines_pos11.png", "machines_pos11.png"},
-		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
-		physical = false,
-	},
-	on_step = function(self, dtime)
-		if not machines[self.name] then machines[self.name]={}; machines[self.name].timer = 10 end
-		machines[self.name].timer = machines[self.name].timer - dtime
-		if machines[self.name].timer<=0 or machines.marker11[self.name] == nil then
-			self.object:remove()
-		end
-	end,
-	on_punch = function(self, hitter)
-		self.object:remove()
-		machines.marker11[self.name] = nil
-		machines[self.name].timer = 10
-	end,
-})
-
-minetest.register_entity(":machines:pos2", {
-	initial_properties = {
-		visual = "cube",
-		visual_size = {x=1.1, y=1.1},
-		textures = {"machines_pos2.png", "machines_pos2.png",
-			"machines_pos2.png", "machines_pos2.png",
-			"machines_pos2.png", "machines_pos2.png"},
-		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
-		physical = false,
-	},
-	on_step = function(self, dtime)
-		if not machines[self.name] then machines[self.name]={}; machines[self.name].timer = 10 end
-		if machines[self.name].timer<=0 or machines.marker2[self.name] == nil then
-			self.object:remove()
-		end
-	end,
-})