diff --git a/init.lua b/init.lua
new file mode 100644
index 0000000..53ea58d
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,85 @@
+strs={}
+
+function strs:starts(Str,Start)
+	return string.sub(Str,1,string.len(Start))==Start
+end
+
+function strs:ends(String,End)
+   return End=='' or string.sub(String,-string.len(End))==End
+end
+
+function strs:rem_from_start(Str,Start)
+	return string.sub(Str,string.len(Start)+1)
+end
+
+function strs:rem_from_end(Str,End)
+	return string.sub(Str, string.len(Str) - string.len(End))
+end
+
+function strs:comparetables(t1, t2)
+	if t1==nil or t2==nil then return false end
+	if #t1 ~= #t2 then return false end
+	for i=1,#t1 do
+		if t1[i] ~= t2[i] then return false end
+	end
+	return true
+end
+
+function strs:keys(t1, t2)
+	if t1==nil or t2==nil then return false end
+	if #t1 ~= #t2 then return false end
+	for name,value in pairs(t1) do
+		if t1[name] ~= t2[name] then return false end
+	end
+	return true
+end
+
+function strs:inarray(s, t1)
+	if t1==nil or s==nil then return false end
+	for index,value in pairs(t1) do
+		if s == value or s==index then return true end
+	end
+	return false
+end
+
+function strs:inarray_table(s, t1)
+	if t1==nil or s==nil then return false end
+	for index,value in pairs(t1) do
+		if strs:comparetables(value,t1)==true then return true end
+	end
+	return false
+end
+
+
+--------------------------------------------------------------
+
+
+--worldprefs = {
+--	private_data = {
+--		settingsData = {
+--		},
+--	},
+--	get_value = function(name)
+--		return worldprefs.private_data.settingsData[name]
+--	end,
+--}
+--
+--local path = minetest.get_worldpath() .. "/worldprefs.txt"
+--
+--if io.open(path, "r") == nil then
+--	io.output(path)
+--	io.write("") -- minetest.serialize({ok = "true"})
+--else
+--	io.input(path)
+--	local size = 2^13      -- good buffer size (8K)
+--	while true do
+--		local block = io.read(size)
+--		if not block then break end
+--		buffer = buffer .. block
+--	end
+--	
+--	local table = minetest.deserialize(buffer)
+--	if table~=nil then
+--		worldprefs.private_data.settingsData = table
+--	end
+--end
\ No newline at end of file