diff --git a/README.md b/README.md
index 239125d..87ee7ee 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
-
 TODO: A distinct image is still missing. Right now, it looks like a steel axe!
 
+   Replacement tool for creative building (Mod for MineTest)
+
 This tool is helpful for creative purposes (i.e. build a wall and "paint" windows into it).
 It replaces nodes with a previously selected other type of node (i.e. places said windows
 into a brick wall).
@@ -18,3 +19,20 @@ When in creative mode, the node will just be replaced. Your inventory will not b
 When not in creative mode, digging will be simulated and you will get what was there. In return, the replacement node
 will be taken from your inventory.
 
+
+
+    Copyright (C) 2013 Sokomine
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
diff --git a/check_owner.lua b/check_owner.lua
index 85778bb..f9ac907 100644
--- a/check_owner.lua
+++ b/check_owner.lua
@@ -1,4 +1,5 @@
--- taken from VannesaEs homedecor mod
+-- taken from Vanessa Ezekowitz' homedecor mod
+-- see http://forum.minetest.net/viewtopic.php?pid=26061 or https://github.com/VanessaE/homedecor for details!
 function replacer_homedecor_node_is_owned(pos, placer)
         local ownername = false
         if type(IsPlayerNodeOwner) == "function" then                                   -- node_ownership mod
diff --git a/init.lua b/init.lua
index a2cbeaa..e1ab661 100644
--- a/init.lua
+++ b/init.lua
@@ -1,4 +1,24 @@
 
+          
+--[[
+    Replacement tool for creative building (Mod for MineTest)
+    Copyright (C) 2013 Sokomine
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+    
 -- adds a function to check ownership of a node; taken from VanessaEs homedecor mod
 dofile(minetest.get_modpath("replacer").."/check_owner.lua");
 
@@ -91,7 +111,7 @@ minetest.register_tool( "replacer:replacer",
        -- do not replace if there is nothing to be done
        if( node.name == item[ "metadata"] ) then
 
-          minetest.chat_send_player( name, "Node already is '"..( item[ "metadata"] or "?" ).."'. Nothing to do.");
+          --minetest.chat_send_player( name, "Node already is '"..( item[ "metadata"] or "?" ).."'. Nothing to do.");
           return nil;
        end
 
@@ -135,7 +155,7 @@ minetest.register_tool( "replacer:replacer",
           --user:get_inventory():add_item( "main", node.name.." 1");
        end
 
-       minetest.chat_send_player( name, "Replacing node '"..( node.name or "air" ).."' with '"..( item[ "metadata"] or "?" ).."'.");
+       --minetest.chat_send_player( name, "Replacing node '"..( node.name or "air" ).."' with '"..( item[ "metadata"] or "?" ).."'.");
 
        --minetest.env:place_node( pos, { name =  item[ "metadata" ] } );
        minetest.env:add_node( pos, { name =  item[ "metadata" ] } );