diff --git a/init.lua b/init.lua
index dea3ff6..436b73a 100644
--- a/init.lua
+++ b/init.lua
@@ -250,6 +250,7 @@ Map of display wires:
 ]]--
 
 local alnum_chars = {
+	{ string.char(31),	{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } },	-- "cursor" segment
 	{ " ",	{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } },	-- 32
 	{ "!",	{ 0,0,0,0,1,1,0,0,0,0,0,0,0,0,0 } },
 	{ '"',	{ 0,0,0,0,0,1,0,1,0,0,0,0,0,0,0 } },
@@ -346,8 +347,7 @@ local alnum_chars = {
 	{ "}",	{ 1,0,0,1,0,0,0,0,1,1,1,0,0,0,0 } },
 	{ "~",	{ 0,1,0,0,0,1,1,0,0,1,0,0,0,0,0 } },
 	{ string.char(127),	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,0 } },	-- "DEL"
-	{ string.char(128),	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 } },	-- all-on
-	{ string.char(129),	{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } },	-- "cursor" segment
+	{ string.char(144),	{ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 } },	-- all-on
 }
 
 local fdir_to_right = {
@@ -379,7 +379,7 @@ local display_string = function(pos, channel, string)
 		local setchan = meta:get_string("channel")
 		if not string.match(node.name, "nixie_tubes:alnum_") or (setchan ~= nil and setchan ~= "" and setchan ~= channel) then break end
 		local asc = string.byte(padded_string, i, i)
-		if node.param2 == fdir and asc > 31 and alnum_chars[asc - 31] then
+		if node.param2 == fdir and ((asc > 30 and asc < 128) or asc == 144) then
 			minetest.swap_node(pos2, { name = "nixie_tubes:alnum_"..asc, param2 = node.param2})
 		end
 		pos2.x = pos2.x + fdir_to_right[fdir+1][1]
@@ -402,15 +402,15 @@ local on_digiline_receive_alnum = function(pos, node, channel, msg)
 			elseif msg == "del" then
 				minetest.swap_node(pos, { name = "nixie_tubes:alnum_127", param2 = node.param2})
 			elseif msg == "allon" then
-				minetest.swap_node(pos, { name = "nixie_tubes:alnum_128", param2 = node.param2})
+				minetest.swap_node(pos, { name = "nixie_tubes:alnum_144", param2 = node.param2})
 			elseif msg == "cursor" then
-				minetest.swap_node(pos, { name = "nixie_tubes:alnum_129", param2 = node.param2})
+				minetest.swap_node(pos, { name = "nixie_tubes:alnum_31", param2 = node.param2})
 			else
 				display_string(pos, channel, msg)
 			end
 		else
 			local asc = string.byte(msg)
-			if asc > 31 and alnum_chars[asc - 31] then
+			if (asc > 30 and asc < 128) or asc == 144 then
 				minetest.swap_node(pos, { name = "nixie_tubes:alnum_"..asc, param2 = node.param2})
 			elseif msg == "get" then -- get value as ASCII numerical value
 				digiline:receptor_send(pos, digiline.rules.default, channel, tonumber(string.match(minetest.get_node(pos).name,"nixie_tubes:alnum_(.+)"))) -- wonderfully horrible string manipulaiton
@@ -421,7 +421,7 @@ local on_digiline_receive_alnum = function(pos, node, channel, msg)
 	elseif msg and type(msg) == "number" then
 		if msg == 0 then
 			minetest.swap_node(pos, { name = "nixie_tubes:alnum_32", param2 = node.param2})
-		elseif msg > 31 and alnum_chars[msg - 31] ~= nil then
+		elseif (msg > 30 and msg < 128) or msg == 144 then
 			minetest.swap_node(pos, { name = "nixie_tubes:alnum_"..tostring(msg), param2 = node.param2})
 		end
 	end