diff --git a/raz.lua b/raz.lua
index dc0a0ea..a7c30ca 100644
--- a/raz.lua
+++ b/raz.lua
@@ -1,4 +1,13 @@
-
+--+++++++++++++++++++++++++++++++++++++++
+--
+-- convert_to_areas
+-- get region datatable from id and
+-- makes an area table
+--
+--+++++++++++++++++++++++++++++++++++++++
+-- input: region ID 
+-- msg/error handling: no
+-- returns this_area as table in the area-format
 function markers:convert_to_areas(id)
 	local this_area = {}
 	local pos1,pos2,data = raz:get_region_data_by_id(id) 
@@ -11,26 +20,58 @@ function markers:convert_to_areas(id)
 	return this_area
 end
 
+--+++++++++++++++++++++++++++++++++++++++
+--
+-- check_region_mark
+-- checks if pname is owner of an region and has the correct privileg
+-- or is region_admin	
+--
+--+++++++++++++++++++++++++++++++++++++++
+-- input: region ID 
+-- msg/error handling: no
+-- returns true - is owner with privileg or region_admin
+function markers:check_region_mark(pname, owner)
+	if( owner == pname and minetest.check_player_privs(pname, { region_mark = true }) )
+	  or minetest.check_player_privs(pname, { region_admin = true })  then
+		return true;
+	end
+	return false
+end
+
+--+++++++++++++++++++++++++++++++++++++++
+--
+-- check_region_mark
+-- checks if pname is owner of an region and has the correct privileg
+-- or is region_admin	
+--
+--+++++++++++++++++++++++++++++++++++++++
+-- input: region ID 
+-- msg/error handling: no
+-- returns true - is owner with privileg or region_admin
+function markers:check_region_set(pname, owner)
+	if( owner == pname and minetest.check_player_privs(pname, { region_set = true }) )
+	  or minetest.check_player_privs(pname, { region_admin = true })  then
+		return true;
+	end
+	return false
+end
+
 --+++++++++++++++++++++++++++++++++++++++
 --
 -- get area by pos1 uand pos2
+-- looks for the region in the pos1-pos2 zone
 --
 --+++++++++++++++++++++++++++++++++++++++
 -- input: pos1, pos2 as vector (table) 
 -- returns the first area found
 -- msg/error handling: no
 -- return nil 	if the is no area
--- return id of the first found area
+-- return area-table with id of the first found area
 markers.get_area_by_pos1_pos2 = function(pos1, pos2)
-	-- get nil or id of th efirst area
 	local found_id = raz:get_area_by_pos1_pos2(pos1, pos2) 
-	--minetest.log("action", "[" .. raz.modname .. "] raz:get_area_by_pos1_pos2(pos1, pos2):"..tostring(minetest.serialize(found)) )
 	if found_id ~= nil then
-		--local data  = raz:get_region_datatable(found_id)
+
 		local return_table = markers:convert_to_areas(found_id)
-		--return_table[ 'id' ] = found_id
-		--return_table[ 'owner' ] = data.owner
-		--return_table[ 'name' ] = data.region_name
 
 		return return_table
 	else
@@ -38,20 +79,38 @@ markers.get_area_by_pos1_pos2 = function(pos1, pos2)
 	end
 end
 
+-----------------------------------------
+--
+-- player can add region
+--
+-----------------------------------------
+-- check ich name has the privileg
+-- pos1 and pos2 are not in an other region
+-- the player/name has less when MAX-Regions set
+-- msg/error handling: 
+-- return false, err-text
+-- return true, nil
+function markers:player_can_add_region(pos1, pos2, name)
+	if not minetest.check_player_privs(name, { region_mark = true }) then 
+		return false, "You dont have the privileg 'region_mark' "
+	end
+	if raz:get_area_by_pos1_pos2(pos1, pos2) ~= nil then 
+		return false, "The pos1,pos2 are in an other region! - You can not mark the region."
+	end
+
+	return true, nil
+end
 
 
-
--- protect/buy an area
+-- protect an region
 markers.marker_on_receive_fields = function(pos, formname, fields, sender)
 	
-
 	if( not( pos )) then
 		minetest.log("action", "[" .. markers.modname .. "] markers.marker_on_receive_fields nor )pos) sender = "..tostring(sender) )
 		minetest.chat_send_player( name, 'Sorry, could not find the marker you where using to access this formspec.' );
 		return;
 	end
 
-
 	local meta  = minetest.get_meta( pos );
 
 	local name  = sender:get_player_name();
@@ -118,17 +177,15 @@ markers.marker_on_receive_fields = function(pos, formname, fields, sender)
 	pos1.y = pos1.y - add_depth;
 	pos2.y = pos2.y + add_height;
 
-	-- warum? wird das gemacht?
+	-- sort pos1 and pos2
 	pos1, pos2 = markers:sortPos( pos1, pos2 );
 
-	--minetest.chat_send_player('singleplayer','INPUT: '..minetest.serialize( pos1  )..' pos2: '..minetest.serialize( pos2 ));
 	minetest.log("action", "[markers] /protect invoked, owner="..name..
 										  " areaname="..fields['set_area_name']..
 										  " startpos="..minetest.pos_to_string(pos1)..
 										  " endpos="  ..minetest.pos_to_string(pos2));
 
-	local canAdd, errMsg = raz:player_can_add_region(pos1, pos2, name)
-	minetest.chat_send_player(name, "CanAdd = "..tostring(canAdd).." err = "..tostring(errMsg))
+	local canAdd, errMsg = markers:player_can_add_region(pos1, pos2, name)
 	if canAdd == false then
 		minetest.chat_send_player(name, "You can't protect that area: "..tostring(errMsg))
 		minetest.show_formspec( name, "markers:mark", markers.get_marker_formspec(sender, pos, errMsg));
@@ -137,7 +194,7 @@ markers.marker_on_receive_fields = function(pos, formname, fields, sender)
 
 	local data = raz:create_data(name,fields['set_area_name'],true)
 	local id = raz:set_region(pos1,pos2,data)
-		minetest.chat_send_player(name, "Area protected. ID: "..tostring(id))
+	minetest.chat_send_player(name, "Area protected. ID: "..tostring(id))
 
 	minetest.show_formspec( name, "markers:mark", markers.get_marker_formspec(sender, pos, nil));
 	
@@ -154,9 +211,9 @@ if not vector.interpolate then
 end
 
 -- taken from mobf
-local COLOR_RED	= "#FF0000";
-local COLOR_GREEN = "#00FF00";
-local COLOR_WHITE = "#FFFFFF";
+--local COLOR_RED	= "#FF0000";
+--local COLOR_GREEN = "#00FF00";
+--local COLOR_WHITE = "#FFFFFF";
 
 
 -- we need to store which list we present to which player
@@ -166,10 +223,7 @@ markers.menu_data_by_player = {}
 markers.get_area_by_pos = function(pos)
 
 	local found_areas = raz.raz_store:get_areas_for_pos(pos) --{};
---	for id, area in pairs(raz.raz_store:get_areas_for_pos(pos)) do
- --		  table.insert(found_areas, area );
- --	  end
- --  end
+
 	return found_areas;
 end
 
@@ -186,21 +240,14 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 	local title	= '???';
 	local tlabel  = '';
 
+
 	-- expects a position in mode_data
 	if(	  mode=='pos' ) then
 		-- title would be too long for a label
 		title  = 'All areas which contain position..';
 		tlabel = '<'..minetest.pos_to_string( mode_data )..'>:';
 		id_list = raz.raz_store:get_areas_for_pos(pos)
---		for id, area in pairs(areas.areas) do
---
- --		  if( mode_data.x >= area.pos1.x and mode_data.x <= area.pos2.x and
- --				mode_data.y >= area.pos1.y and mode_data.y <= area.pos2.y and
-  --			  mode_data.z >= area.pos1.z and mode_data.z <= area.pos2.z )then--
---
-  --			 table.insert( id_list, id );
-	 --	  end
-  --	 end
+
 
 	-- expects a playername in mode_data
 	elseif( mode=='player' ) then
@@ -211,7 +258,6 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 		local data = {}
 		while raz.raz_store:get_area(counter) do
 			data = raz:get_region_datatable(counter)
-	 --  for id, area in pairs(areas.areas) do
 
 			  if( data.owner == mode_data ) then
 				  table.insert( id_list, counter );
@@ -219,29 +265,21 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 			counter = counter + 1
 		end
 
+
 	-- expects an area_id in mode_data
 	elseif( mode=='subareas' ) then
 
-		title  = 'All subareas of area..';
-		tlabel = '<'..tostring( areas.areas[ mode_data ].name )..'> ['..tostring( mode_data )..']:';
+		minetest.log("error", "[" .. markers.modname .. "] {markers.get_area_list_formspec} there are no subareas in raz-mod.")
 
-	 --  for id, area in pairs(areas.areas) do
---
-  --		 if( area.parent and area.parent == mode_data ) then
-	 --		  table.insert( id_list, id );
-	 --	  end
-	 --  end
-		id_list = {1,2,4}
 
-	-- show only areas that do not have parents
+	-- show only regions that do have parent attribute = true
 	elseif( mode=='main_areas' ) then
-		title  = 'All main areas withhin '..tostring( markers.AREA_RANGE )..' m:';
-		tlabel = '*all main areas*';
+		title  = 'All parent region withhin '..tostring( markers.AREA_RANGE )..' m:';
+		tlabel = '*all parent regions *';
 		local counter = 0
 		local data = {}
 		while raz.raz_store:get_area(counter) do
 			data = raz:get_region_datatable(counter)
-	 --  for id, area in pairs(areas.areas) do
 
 			  if( data.parent == true ) then
 				  table.insert( id_list, counter );
@@ -249,10 +287,10 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 			counter = counter + 1
 		end
  
-
+	-- show all regions
 	elseif( mode=='all' ) then
-		title  = 'All areas withhin '..tostring( markers.AREA_RANGE )..' m:';
-		tlabel = '*all areas*';
+		title  = 'All regions withhin '..tostring( markers.AREA_RANGE )..' m:';
+		tlabel = '*all regions*';
 
 		local counter = 0
 		local data = {}
@@ -262,11 +300,10 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 		end
 	end
 
-	-- Sort the list of areas so the nearest comes first
+	-- Sort the list of regions so the nearest comes first
 	local nearsorter = function(a, b)
-		-- maybe in AreaStore() min and max is user for pos1 , pos2
-		  return vector.distance(vector.interpolate(raz.raz_store:get_area(a).pos1, raz.raz_store:get_area(a).pos2, 0.5), ppos) <
-		vector.distance(vector.interpolate(raz.raz_store:get_area(b).pos1, raz.raz_store:get_area(b).pos2, 0.5), ppos)
+		  return vector.distance(vector.interpolate(raz.raz_store:get_area(a).min, raz.raz_store:get_area(a).max, 0.5), ppos) <
+		vector.distance(vector.interpolate(raz.raz_store:get_area(b).min, raz.raz_store:get_area(b).max, 0.5), ppos)
 	end
 	table.sort(id_list, nearsorter)
 
@@ -283,11 +320,13 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 	"textlist[0.5,0.5;7,8;markers_area_list_selection;"; 
 
 	local liste = '';
+	local liste_string = ""
 	for i,v in ipairs( id_list ) do
 		if( liste ~= '' ) then
 			liste = liste..',';
 		end
-		liste = liste..minetest.formspec_escape( raz:get_region_status(pos) );
+		list_string = "ID = "..v.." - "..raz:get_region_attribute(v, "region_name") 
+		liste = liste..minetest.formspec_escape( list_string ) 
 			
 	end
 
@@ -308,32 +347,11 @@ markers.get_area_list_formspec = function(ppos, player, mode, pos, mode_data, se
 		and id_list[ selected ]
 		and raz.raz_store:get_area( id_list[ selected ]) ) then
 
-		local this_area = raz.raz_store:get_area( id_list[ selected ]);
-
-		local subareas = {};
---		for i,v in pairs( areas.areas ) do
---		  if( v.parent and v.parent == id_list[ selected ]) then
---				table.insert( subareas, i );
- --		  end
- --	  end
+		local this_area = markers:convert_to_areas( id_list[ selected ]);
 
 		formspec = formspec..
 					markers.show_compass_marker( 8.5, 3.0, false, pos, this_area.pos1, this_area.pos2 );
 
-
---		if( this_area.parent) then
---			formspec = formspec..
---					'button[8.0,0.5;2,0.5;show_parent;'.. 
---			minetest.formspec_escape( areas.areas[ this_area.parent ].name )..']';
- --	  end
-
---		if( #subareas > 0 ) then
- --		  formspec = formspec..
- --				  'button[8.0,1.0;2,0.5;list_subareas;'..
---							  minetest.formspec_escape( 'List subareas ('..tostring( #subareas )..')')..']';
---		end
- 
-
 		if( mode=='player' ) then
 			formspec = formspec..
 					'label[8.0,1.5;'..
@@ -376,30 +394,22 @@ markers.get_area_desc_formspec = function( id, player, pos )
 	if( not id  or not raz.raz_store:get_area( id )) then
 		return 'field[info;Error:;Area not found.]';
 	end
-	-- build the this_area table
-	local this_area =  markers:convert_to_areas(id) --{} --raz.raz_store:get_area( id );
-	--local pos1,pos2,data = raz:get_region_data_by_id(id) 
-	--this_area[ 'id' ] = id
-	--this_area[ 'owner' ] = data.owner
-	--this_area[ 'name' ] = data.region_name
-	--this_area[ 'pos1' ] = pos1
-	--this_area[ 'pos2' ] = pos2
-	--this_area[ 'guests' ] = raz:convert_string_to_table(data.guests, ",")
+
+	-- build the this_area table from raz_store data
+	local this_area =  markers:convert_to_areas(id) 
 
 	local pname	  = player:get_player_name();
 
 	-- show some buttons only if area is owned by the player
-	local is_owner  = false;
-
-	if( this_area.owner == pname or minetest.check_player_privs(pname, { region_admin = true }) ) then
-		is_owner	  = true;
-	end
+	local has_region_mark = markers:check_region_mark(pname, this_area.owner)
+	local has_region_set = markers:check_region_set(pname, this_area.owner)
+	
 
 	local formspec  = 'size[10,9]'..
 	'label[2.5,0.0;Area information and management]'..
 	'button_exit[4.7,7.0;1,0.5;abort;OK]';
 
-	-- general information about the area
+	-- general information about the region
 	formspec = formspec..
 	'label[0.5,1.0;This is area number ]'..
 		  'label[4.7,1.0;'..tostring( id )..']'..
@@ -411,64 +421,46 @@ markers.get_area_desc_formspec = function( id, player, pos )
 		  'label[4.7,2.0;'..minetest.formspec_escape( this_area.owner)..']';
 
 
-	-- these functions are only available to the owner of the area
-	if( is_owner ) then
+	-- these functions are only available to the owner of the region with privileg region_set
+	if has_region_set then
 		formspec = formspec..
-		  'button_exit[8.0,0.0;2.2,0.7;change_owner;Change owner]'..
-		  'button_exit[8.0,1.0;2.2,0.7;delete;Delete]'..
-		  'button_exit[8.0,1.7;2.2,0.7;rename;Rename]'; --..
---		  'button_exit[8.0,2.0;2,0.5;list_player_areas;My areas]';
---	else
---		formspec = formspec..
---		  'button_exit[8.0,2.0;2,0.5;list_player_areas;Player\'s areas]';
+		  'button_exit[8.0,0.0;2.2,0.7;change_owner;Change owner]';
 	end
 
-
-
+	-- these functions are only available to the owner of the region with privileg region_mark
+	if has_region_mark then
+		formspec = formspec..
+		  'button_exit[8.0,1.0;2.2,0.7;delete;Delete]'..
+		  'button_exit[8.0,1.7;2.2,0.7;rename;Rename]'
+	end
 
 	-- show subowners and areas with the same coordinates
 	formspec = formspec..
 	'label[0.5,2.5;invited Guests of the area:]';
-	local further_owners = this_area.guests--{};
+	local guests = this_area.guests--{};
 
-	if( #further_owners > 0 ) then
+	if( #guests > 0 ) then
 
 		formspec = formspec..
-		  'label[4.7,2.5;'..minetest.formspec_escape( table.concat( further_owners, ', '))..'.]';
+		  'label[4.7,2.5;'..minetest.formspec_escape( table.concat( guests, ', '))..'.]';
 
-		-- deleting subowners is done by deleting their areas
-		if( is_owner ) then
+		if( has_region_set ) then
 			formspec = formspec..
-			  'button_exit[8.0,2.5;2.2,0.5;add_guest;Add Guest]'..
-	 		  'button_exit[8.0,3.0;2.2,0.5;ban_guest;remove Guest]';
+			  'button_exit[8.0,2.5;2.2,0.7;add_guest;Add Guest]'..
+	 		  'button_exit[8.0,3.2;2.2,0.7;ban_guest;remove Guest]';
 		end
 	else
 		formspec = formspec..
 		  'label[4.7,2.5;-none-]';
  
-		if( is_owner ) then
+		if( has_region_set ) then
 			formspec = formspec..
-			  'button_exit[8.0,2.5;2.2,0.5;add_guest;Add Guest]'..
-	 		  'button_exit[8.0,3.0;2.2,0.5;ban_guest;remove Guest]';
+			  'button_exit[8.0,2.5;2.2,0.7;add_guest;Add Guest]'..
+	 		  'button_exit[8.0,3.2;2.2,0.7;ban_guest;remove Guest]';
 		end
 	end  
 
 
-
-	-- does the area have subareas, i.e. is it a parent area for others?
-	local sub_areas = {};
-	if( #sub_areas > 0 ) then
-
-		formspec = formspec..
-	'label[0.5,4.0;Number of defined subareas:]'..
-		  'label[4.7,4.0;'..tostring( #sub_areas )..']'..
-		  'button_exit[8.0,4.0;2,0.5;list_subareas;List subareas]';
- --  else
- --	  formspec = formspec..
---	'label[0.5,4.0;There are no subareas defined.]';
-	end
-
-
 	-- give information about the size of the area
 	local length_x = (math.abs( this_area.pos2.x - this_area.pos1.x )+1);
 	local length_y = (math.abs( this_area.pos2.y - this_area.pos1.y )+1);
@@ -486,9 +478,7 @@ markers.get_area_desc_formspec = function( id, player, pos )
 	formspec = formspec..
 					markers.show_compass_marker( 2.0, 7.0, true, pos, this_area.pos1, this_area.pos2 );
 
--- TODO: buy / sell button
-
-	local pname = player:get_player_name();
+	--local pname = player:get_player_name();
 	if( not( markers.menu_data_by_player[ pname ] )) then
 		markers.menu_data_by_player[ pname ] = {};
 	end
@@ -529,98 +519,108 @@ markers.form_input_handler_areas = function( player, formname, fields)
 	local menu_data = markers.menu_data_by_player[ pname ];
 	local formspec = '';
 
-	-- rename an area
-	if( fields.rename 
-			 and menu_data.selected									-- raz_store-ID is set
-			 and raz.raz_store:get_area(menu_data.selected) 		-- there is an region for this ID 
-			 and raz:get_region_attribute(menu_data.selected, "owner" ) == pname ) then	-- the owner of the ID/region is pname
+	-----------------------------------------------------------------------
+	-- rename an region 
+	-- only region_admin or owner with region_mark can rename region
+	if( fields.rename 													-- rename
+			 and menu_data.selected										-- raz_store-ID is set
+			 and raz.raz_store:get_area(menu_data.selected) ) then		-- there is an region for this ID 
 	
-		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
+		-- there are no checks here - those happen when the region will renamed
+		local area = markers:convert_to_areas(menu_data.selected) 		-- get raz_store converted to an areas-table
+
 		if( not( area.name )) then
 			area.name = '-enter area name-';
 		end
 		formspec = 'field[rename_new_name;Enter new name for area:;'..minetest.formspec_escape( area.name )..']';
 
-	elseif( fields.rename_new_name 
-			 and menu_data.selected									-- raz_store-ID is set
-			 and raz.raz_store:get_area(menu_data.selected) 		-- there is an region for this ID 
-			 and ((raz:get_region_attribute(menu_data.selected, "owner" ) == pname ) -- the owner of the ID/region is pname OR region_admin
-				or minetest.check_player_privs(pname, { region_admin = true }))) then 
-	
-		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
+	elseif( fields.rename_new_name 										-- rename_new_name
+			 and menu_data.selected										-- raz_store-ID is set
+			 and raz.raz_store:get_area(menu_data.selected) ) then		-- there is an region for this ID 
 
-		-- actually rename the area
-		raz:region_set_attribute(pname, menu_data.selected, "region_name", fields.rename_new_name)
 
-		minetest.chat_send_player( pname, 'Region successfully renamed.');
-		-- shwo the renamed area
-		formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
- 
+		local area = markers:convert_to_areas(menu_data.selected) 		-- get raz_store converted to an areas-table
 
-	
+		-- check owner with privileg or region admin
+		if markers:check_region_mark(pname, area.owner) then			-- owner with privileg or admin
+
+			-- actually rename the area
+			local err = raz:region_set_attribute(pname, menu_data.selected, "region_name", fields.rename_new_name)		
+			if err then
+				minetest.chat_send_player( pname, 'Region successfully renamed.');
+
+				-- shwo the renamed area
+				formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
+ 			else 
+					raz:msg_handling(err, pname)
+			end
+		else
+			if area.owner ~= pname 	then
+				minetest.chat_send_player( pname, 'Permission denied. You are not owner of this region!');
+			else
+				minetest.chat_send_player( pname, "Permission denied. Missing privileg \'region_mark\'!");
+			end
+		end
+
+	-----------------------------------------------------------------------
 	-- change owner the area
-	elseif( fields.change_owner
-			 and menu_data.selected									-- raz_store-ID is set
-			 and raz.raz_store:get_area(menu_data.selected)) 		-- there is an region for this ID 
-			  	then 
+	-- only region_admin or owner with region_set can change owner
+	elseif( fields.change_owner											-- change_owner
+			 and menu_data.selected										-- raz_store-ID is set
+			 and raz.raz_store:get_area(menu_data.selected)) then		-- there is an region for this ID 
 
 		-- there are no checks here - those happen when the area is transferred
 		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
 		formspec = 'field[change_owner_name;Give area \"'..minetest.formspec_escape( area.name )..'\" to player:;-enter name of NEW OWNER-]';
 
-	elseif( fields.change_owner_name
-			 and menu_data.selected									-- raz_store-ID is set
-			 and raz.raz_store:get_area(menu_data.selected)) 		-- there is an region for this 
-				then 
+	elseif( fields.change_owner_name									-- change_owner_name
+			 and menu_data.selected										-- raz_store-ID is set
+			 and raz.raz_store:get_area(menu_data.selected)) then		-- there is an region for this 
 
-		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
+
+		local area = markers:convert_to_areas(menu_data.selected) 		-- get raz_store converted to an areas-table
 		
-		-- only own areas can be transfered to another player (or region_admin)
-		if( area.owner ~= pname 
-		  and not( minetest.check_player_privs(pname, { region_admin = true }))) then
- 
-			minetest.chat_send_player( pname, 'Permission denied. You do not own the region.');
-
-		-- did pname has the correct privileg?		
-		elseif( not( minetest.check_player_privs(pname, { region_set = true }))) then
-			
-			minetest.chat_send_player( pname, 'Permission denied. You do not have the correct privileg.');
-
-		-- the new Player do not exist
-		elseif( not( minetest.player_exists( fields.change_owner_name ))) then
+		-- check new owner is player
+		if( not( minetest.player_exists( fields.change_owner_name ))) then
 
 			minetest.chat_send_player( pname, 'That player does not exist.');
 
+		-- check owner with privileg or region admin
+		elseif markers:check_region_set(pname, area.owner) then			-- owner with privileg or admin
+		
+				-- actually change the owner
+				local err = raz:region_set_attribute(pname, menu_data.selected, "owner", fields.change_owner_name) 
+				if err then
+
+					minetest.chat_send_player( pname, 'Your region '..tostring( area.name )..' has been transfered to '..tostring( fields.change_owner_name )..'.');
+
+					minetest.chat_send_player( fields.change_owner_name, pname..' has given you control over an region.')
+				else 
+					raz:msg_handling(err, pname)
+				end
+	 
+		elseif area.owner ~= pname 	then
+				minetest.chat_send_player( pname, 'Permission denied. You are not owner of this region!');
 		else
-			-- actually change the owner
-			raz:region_set_attribute(pname, menu_data.selected, "owner", fields.change_owner_name)
-
-			minetest.chat_send_player( pname, 'Your region '..tostring( area.name )..' has been transfered to '..tostring( fields.change_owner_name )..'.');
-
-			minetest.chat_send_player( fields.change_owner_name, pname..' has given you control over an region.')
+				minetest.chat_send_player( pname, "Permission denied. Missing privileg \'region_set\'!");
 		end
 
 		formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
 
 
+	-----------------------------------------------------------------------
 	-- add a guest - check id / region with ID
 	elseif( fields.add_guest
 			 and menu_data.selected									-- raz_store-ID is set
 			 and raz.raz_store:get_area(menu_data.selected) ) then		-- there is an region for this ID 
---			 and raz:get_region_attribute(menu_data.selected, "owner" ) == pname ) then	-- the owner of the ID/region is pname
-
-
 	
 		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
 
-		formspec = 'field[add_guest_name;Grant access to area \"'..minetest.formspec_escape( area.name )..'\" to player:;-enter player name-]';
+		formspec = 'field[add_guest_name;Invite a player to your region: \"'..minetest.formspec_escape( area.name )..'\";-enter player name-]';
 
 	elseif( fields.add_guest_name 
-		-- the player has to own the area already; we need a diffrent name here
-	--		 and fields.add_guest_name ~= pname
 			 and menu_data.selected									-- raz_store-ID is set
 			 and raz.raz_store:get_area(menu_data.selected) ) then	-- there is an region for this ID 
-	--		 and raz:get_region_attribute(menu_data.selected, "owner" ) == pname ) then	-- the owner of the ID/region is pname
 
 		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
 
@@ -631,52 +631,52 @@ markers.form_input_handler_areas = function( player, formname, fields)
 			-- show the formspec
 			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
 		
-		-- check privileg
-		elseif( not( minetest.check_player_privs(pname, { region_set = true }) 						-- privileg
-			and not (raz:get_region_attribute(menu_data.selected, "owner" ) == pname )) 				-- and owner
-			or not ( minetest.check_player_privs(pname, { region_admin = true })) ) then			-- or admin
-		
-			minetest.chat_send_player( pname, 'Permission denied. You do not have the correct privileg.');
+		-- check owner with privileg or region admin
+		elseif markers:check_region_set(pname, area.owner) then			-- owner with privileg or admin
 
-		else
-			-- log the creation of the new area
+			-- log add guest
 			minetest.log("action", pname.." add_guest through the markers-mod. guest = "..fields.add_guest_name..
 										  " AreaName = "..area.name.." ParentID = "..menu_data.selected..
 										  " StartPos = "..area.pos1.x..","..area.pos1.y..","..area.pos1.z..
 										  " EndPos = "  ..area.pos2.x..","..area.pos2.y..","..area.pos2.z)
 
-			-- actually addthe guest
-			raz:region_set_attribute(pname, menu_data.selected, "guest", fields.add_guest_name, true)
+			-- actually add the guest
+			if raz:region_set_attribute(pname, menu_data.selected, "guest", fields.add_guest_name, true) then
 
 
-			minetest.chat_send_player( fields.add_guest_name,
-										  "You have been invitedinto the region #"..
-										  menu_data.selected..". Type /region list to show your region.")
+				minetest.chat_send_player( fields.add_guest_name,
+											  "You have been invitedinto the region #"..
+											  menu_data.selected..". Type /region list to show your region.")
 
-			minetest.chat_send_player( pname, 'The player may now build and dig in your area.');
-			-- shwo the new area
-			--markers.menu_data_by_player[ pname ].selected = new_id;
-			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
+				minetest.chat_send_player( pname, 'The player may now build and dig in your area.');
+
+				-- shwo the new area
+				formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
+
+			else
+				minetest.chat_send_player( pname, "ther is a player with this name {".. fields.ban_guest_name.."} in your guestlist!");
+			end
+				
+		elseif area.owner ~= pname 	then
+				minetest.chat_send_player( pname, 'Permission denied. You are not owner of this region!');
+		else
+				minetest.chat_send_player( pname, "Permission denied. Missing privileg \'region_setz\'!");
 		end
+		
 
+	-----------------------------------------------------------------------
 	-- ban a guest
 	elseif( fields.ban_guest
 			 and menu_data.selected									-- raz_store-ID is set
-			 and raz.raz_store:get_area(menu_data.selected) ) then		-- there is an region for this ID 
---			 and raz:get_region_attribute(menu_data.selected, "owner" ) == pname ) then	-- the owner of the ID/region is pname
-
-
+			 and raz.raz_store:get_area(menu_data.selected) ) then	-- there is an region for this ID 
 	
 		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
 
 		formspec = 'field[ban_guest_name;Grant access to area \"'..minetest.formspec_escape( area.name )..'\" to player:;-enter player name-]';
 
 	elseif( fields.ban_guest_name 
-		-- the player has to own the area already; we need a diffrent name here
-	--		 and fields.ban_guest_name ~= pname
 			 and menu_data.selected									-- raz_store-ID is set
 			 and raz.raz_store:get_area(menu_data.selected) ) then	-- there is an region for this ID 
-	--		 and raz:get_region_attribute(menu_data.selected, "owner" ) == pname ) then	-- the owner of the ID/region is pname
 
 		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
 
@@ -687,153 +687,124 @@ markers.form_input_handler_areas = function( player, formname, fields)
 			-- show the formspec
 			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
 		
-		-- check privileg
-		elseif( not( minetest.check_player_privs(pname, { region_set = true }) 						-- privileg
-			and not (raz:get_region_attribute(menu_data.selected, "owner" ) == pname )) 				-- and owner
-			or not ( minetest.check_player_privs(pname, { region_admin = true })) ) then			-- or admin
-		
-			minetest.chat_send_player( pname, 'Permission denied. You do not have the correct privileg.');
+		-- check owner with privileg or region admin
+		elseif markers:check_region_set(pname, area.owner) then			-- owner with privileg or admin
 
-		else
-			-- log the creation of the new area
-			minetest.log("action", pname.." add_guest through the markers-mod. guest = "..fields.ban_guest_name..
+			-- log ban guest
+			minetest.log("action", pname.." ban_guest through the markers-mod. guest = "..fields.ban_guest_name..
 										  " AreaName = "..area.name.." ParentID = "..menu_data.selected..
 										  " StartPos = "..area.pos1.x..","..area.pos1.y..","..area.pos1.z..
 										  " EndPos = "  ..area.pos2.x..","..area.pos2.y..","..area.pos2.z)
 
-			-- actually addthe guest
-			raz:region_set_attribute(pname, menu_data.selected, "guest", fields.ban_guest_name, false)
+			-- actually add the guest
+			if raz:region_set_attribute(pname, menu_data.selected, "guest", fields.ban_guest_name, false) then
 
 
-			minetest.chat_send_player( fields.ban_guest_name,
-										  "You have been invitedinto the region #"..
-										  menu_data.selected..". Type /region list to show your region.")
+				minetest.chat_send_player( fields.ban_guest_name,
+											  "You have been banned from the region #"..
+											  menu_data.selected..". Type /region list to show your region.")
 
-			minetest.chat_send_player( pname, 'The player may now build and dig in your area.');
-			-- shwo the new area
-			--markers.menu_data_by_player[ pname ].selected = new_id;
-			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-		end
+				minetest.chat_send_player( pname, "You have banned player ".. fields.ban_guest_name.." from your region {"..area.name.."}");
 
---[[
-
-	-- delete area
-	elseif( fields.delete 
-			 and menu_data.selected
-			 and areas.areas[ menu_data.selected ] ) then
-
-		local area = areas.areas[ menu_data.selected ];
-
-		-- a player can only delete own areas or subareas of own areas
-		if( area.owner ~= pname 
-		  and not(	  area.parent 
-					  and areas.areas[ area.parent ] 
-					  and areas.areas[ area.parent ].owner
-					  and areas.areas[ area.parent ].owner == pname )
-		  and not( minetest.check_player_privs(pname, {areas=true}))) then
- 
-			minetest.chat_send_player( pname, 'Permission denied. You own neither the area itshelf nor its parent area.');
-			-- shwo the area where the renaming failed
-			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
+				-- shwo the new area
+				formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
+			else
+				minetest.chat_send_player( pname, "No player {".. fields.ban_guest_name.."} in your guestlist of region {"..area.name.."}");
+			end
 
 		else
 
-			formspec = 'field[rename_new_name;Enter new name for area:;'..minetest.formspec_escape( area.name )..']';
-			formspec = 'field[delete_confirm;'..minetest.formspec_escape( 'Really delete area \"'..area.name..
-									 '\" (owned by '..area.owner..')? Confirm with YES:')..';-type yes in capitals to confirm-]';
+			minetest.chat_send_player( pname, 'Permission denied. You do not have the correct privileg.');
 
 		end
 
+	-----------------------------------------------------------------------
+	-- delete area
+	elseif( fields.delete 
+			 and menu_data.selected									-- raz_store-ID is set
+			 and raz.raz_store:get_area(menu_data.selected) ) then		-- there is an region for this ID 
+
+		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
+
+		-- a player can only delete own regions with privileg - region_mark or as admin
+		-- check owner with privileg or region admin
+		if markers:check_region_mark(pname, area.owner) then			-- owner with privileg or admin
+ 
+			-- get name of region
+			formspec = 'field[rename_new_name;Enter new name for area:;'..minetest.formspec_escape( area.name )..']';
+			-- confirm 
+			formspec = 'field[delete_confirm;'..minetest.formspec_escape( 'Really delete area \"'..area.name..
+					 '\" (owned by '..area.owner..')? Confirm with YES:')..';-type yes in capitals to confirm-]';
+
+		elseif raz:get_region_attribute(menu_data.selected, "owner" ) ~= pname 	then
+				minetest.chat_send_player( pname, 'Permission denied. You are not owner of this region!');
+		else
+				minetest.chat_send_player( pname, "Permission denied. missing privileg \'region_mark\'!");
+
+				-- show the area where the renaming failed
+				formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );	
+		end
+
 	elseif( fields.delete_confirm 
-			 and menu_data.selected
-			 and areas.areas[ menu_data.selected ] ) then
-	
-		local area = areas.areas[ menu_data.selected ];
-		local old_owner = area.owner;
+			 and menu_data.selected									-- raz_store-ID is set
+			 and raz.raz_store:get_area(menu_data.selected) ) then		-- there is an region for this ID 
 
-		local subareas = {};
-		for i,v in pairs( areas.areas ) do
-			if( v.parent and v.parent == menu_data.selected ) then
-				table.insert( subareas, i );
-			end
-		end
+		-- there are no checks here - those happened before
+		local area = markers:convert_to_areas(menu_data.selected) 	-- get raz_store converted to an areas-table
 
-		-- a player can only delete own areas or subareas of own areas
-		if( area.owner ~= pname 
-		  and not(	  area.parent 
-					  and areas.areas[ area.parent ] 
-					  and areas.areas[ area.parent ].owner
-					  and areas.areas[ area.parent ].owner == pname )
-		  and not( minetest.check_player_privs(pname, {areas=true}))) then
+				-- a player can only delete own areas
+		-- check owner with privileg or region admin
+		if markers:check_region_mark(pname, area.owner) then			-- owner with privileg or admin
  
-			minetest.chat_send_player( pname, 'Permission denied. You own neither the area itshelf nor its parent area.');
-			-- shwo the renamed area
-			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-
-		-- avoid accidents
-		elseif( fields.delete_confirm ~= 'YES' ) then
-			minetest.chat_send_player( pname, 'Delition of area \"'..tostring( area.name )..'\" (owned by '..old_owner..') aborted.');
-			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-
-		-- only areas without subareas can be deleted
-		elseif( #subareas > 0 ) then 
-			minetest.chat_send_player( pname, 'The area has '..tostring( #subareas )..' subarea(s). Please delete those first!');
-			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
-
+			-- avoid accidents
+			if( fields.delete_confirm ~= 'YES' ) then
+				minetest.chat_send_player( pname, 'Delition of area \"'..tostring( area.name )..'\" (owned by '..area.owner..') aborted.');
+				formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );
+			else
+				
+				minetest.chat_send_player( pname, 'Area \"'..tostring( area.name )..'\" (owned by '..area.owner..') deleted.');
+				-- really delete
+				raz:delete_region(menu_data.selected)
+				-- show the list of areas owned by the previous owner
+				formspec = markers.get_area_list_formspec(ppos, player, 'player',	menu_data.pos, area.owner, nil );
+			end
 		else
 
-			minetest.chat_send_player( pname, 'Area \"'..tostring( area.name )..'\" (owned by '..old_owner..') deleted.');
-			-- really delete
-			areas:remove( menu_data.selected, false ); -- no recursive delete
-			areas:save();
-			-- show the list of areas owned by the previous owner
-			formspec = markers.get_area_list_formspec(ppos, player, 'player',	menu_data.pos, old_owner, nil );
+			minetest.chat_send_player( pname, 'Permission denied. You are not owner of this region!');
+			-- shwo the area where the renaming failed
+			formspec = markers.get_area_desc_formspec( menu_data.selected, player, menu_data.pos );				
+
 		end
 
-	
-
-	elseif( fields.show_parent 
-			 and menu_data.selected
-			 and areas.areas[ menu_data.selected ]
-			 and areas.areas[ menu_data.selected ].parent ) then
-
-		formspec = markers.get_area_desc_formspec( areas.areas[ menu_data.selected ].parent, player, menu_data.pos );
-
-
-	elseif( fields.list_player_areas
-			 and menu_data.selected
-			 and areas.areas[ menu_data.selected ] ) then
-
-		formspec = markers.get_area_list_formspec(ppos, player, 'player',	menu_data.pos, areas.areas[ menu_data.selected ].owner, nil );
-
-
-	elseif( fields.list_subareas
-			 and menu_data.selected
-			 and areas.areas[ menu_data.selected ] ) then
-
-		formspec = markers.get_area_list_formspec(ppos, player, 'subareas', menu_data.pos, menu_data.selected, nil );
-
 
+	-----------------------------------------------------------------------
+	-- list_main_areas
 	elseif( fields.list_main_areas ) then
 
-		formspec = markers.get_area_list_formspec(ppos, player, 'main_areas', menu_data.pos, nil, nil );
-			 
+	  formspec = markers.get_area_list_formspec(ppos, player, 'main_areas', menu_data.pos, nil, nil );
+
+		  
+	-----------------------------------------------------------------------
+	-- list_areas_at
 	elseif( fields.list_areas_at
-			 and menu_data.pos ) then
+		  and menu_data.pos ) then
 
-		formspec = markers.get_area_list_formspec(ppos, player, 'pos',		menu_data.pos, menu_data.pos, nil );
+--	  formspec = markers.get_area_list_formspec(ppos, player, 'pos', menu_data.pos, menu_data.pos, nil );
+	  formspec = markers.get_area_list_formspec(ppos, player, 'all', menu_data.pos, menu_data.pos, nil );
 
 
+	-----------------------------------------------------------------------
+	-- markers_area_list_selection
 	elseif( fields.markers_area_list_selection
-			 and menu_data.typ
-			 and menu_data.typ == 'area_list'
-			 and menu_data.list
-			 and #menu_data.list > 0 ) then
+		  and menu_data.typ
+		  and menu_data.typ == 'area_list'
+		  and menu_data.list
+		  and #menu_data.list > 0 ) then
 
 
 		local field_data = fields.markers_area_list_selection:split( ':' );
 		if( not( field_data ) or #field_data < 2 ) then
-			field_data = { '', '' };
+		 	field_data = { '', '' };
 		end
 
 		local selected = tonumber( field_data[ 2 ] );
@@ -843,10 +814,11 @@ markers.form_input_handler_areas = function( player, formname, fields)
 			formspec = markers.get_area_desc_formspec( tonumber( menu_data.list[ selected ] ), player, menu_data.pos );
 		else
 
-			-- on single click, just show the position of that particular area
-			formspec = markers.get_area_list_formspec(ppos, player, menu_data.mode, menu_data.pos, menu_data.mode_data, selected );
+		 -- on single click, just show the position of that particular area
+		 formspec = markers.get_area_list_formspec(ppos, player, menu_data.mode, menu_data.pos, menu_data.mode_data, selected );
 		end
-]]--
+
+
 	else
 		return false;
 	end
@@ -884,25 +856,20 @@ markers.show_marker_stone_formspec = function( player, pos )
 	local min_area_size	= 100000000000;
 
 	for id, area in pairs(raz.raz_store:get_areas_for_pos(pos)) do
-	--for id, area in pairs(areas.areas) do
-	  -- if( pos.x >= area.pos1.x and pos.x <= area.pos2.x and
-		 --	pos.y >= area.pos1.y and pos.y <= area.pos2.y and
-			-- pos.z >= area.pos1.z and pos.z <= area.pos2.z )then
 
-			-- ignore y (height) value because some areas may go from bottom to top
-			local area_size = math.abs( area.max.x - area.min.x )
-								 * math.abs( area.max.z - area.min.z );
+		-- ignore y (height) value because some areas may go from bottom to top
+		local area_size = math.abs( area.max.x - area.min.x )
+							 * math.abs( area.max.z - area.min.z );
 
-			-- collect subareas that have the same size
-			if( area_size == min_area_size ) then
-				table.insert(found_areas, id );
-			-- we have found a smaller area - that is more intresting here
-			elseif( area_size <= min_area_size ) then
-				found_areas = {};
-				min_area_size = area_size;
-				table.insert(found_areas, id );
-			end
-	  -- end
+		-- collect subareas that have the same size
+		if( area_size == min_area_size ) then
+			table.insert(found_areas, id );
+		-- we have found a smaller area - that is more intresting here
+		elseif( area_size <= min_area_size ) then
+			found_areas = {};
+			min_area_size = area_size;
+			table.insert(found_areas, id );
+		end
 	end
 
 
@@ -910,9 +877,9 @@ markers.show_marker_stone_formspec = function( player, pos )
 	if(	  #found_areas < 1 ) then
 
 		formspec = 'size[4,3]'..
- 		'label[0.5,0.5;This position is not protected.]'..
-			  'button[1.0,1.5;2,0.5;list_main_areas;List all main areas]'..
-		'button_exit[3.0,1.5;1,0.5;abort;OK]';
+ 			'label[0.5,0.5;This position is not protected.]'..
+			'button[1.0,1.5;2,0.5;list_main_areas;List all main areas]'..
+			'button_exit[3.0,1.5;1,0.5;abort;OK]';
  
 	-- found exactly one areaa - display it
 	elseif( #found_areas == 1 ) then
@@ -953,7 +920,7 @@ markers.show_marker_stone_formspec = function( player, pos )
 		if(	  own_area	 > 0 ) then
 
 			formspec = markers.get_area_desc_formspec( own_area,	 player, pos );
-
+--[[
 		-- if the player owns none of these areas, show the topmost (parentless) area
 		elseif( parent_area > 0 ) then
 
@@ -968,6 +935,7 @@ markers.show_marker_stone_formspec = function( player, pos )
 
 		-- our superficial analysis of the structure of the areas failed; it is up to the player to
 		-- find out which of the candidates he is intrested in; we list them all
+]]--
 		else
 
 		  formspec = markers.get_area_list_formspec(ppos, player, 'pos', pos, pos, nil );