diff --git a/bags.lua b/bags.lua
index 05c836a..8b46501 100644
--- a/bags.lua
+++ b/bags.lua
@@ -4,9 +4,9 @@
 -- License: GPLv3
 
 unified_inventory.register_page("bags", {
-	get_formspec = function(player, formspec)
+	get_formspec = function(player)
 		local player_name = player:get_player_name()
-		formspec = formspec .. "background[0.06,0.99;7.92,7.52;ui_bags_main_form.png]"
+		local formspec = "background[0.06,0.99;7.92,7.52;ui_bags_main_form.png]"
 		formspec = formspec.."label[0,0;Bags]"
 		formspec = formspec.."button[0,2;2,0.5;bag1;Bag 1]"
 		formspec = formspec.."button[2,2;2,0.5;bag2;Bag 2]"
@@ -16,7 +16,7 @@ unified_inventory.register_page("bags", {
 		formspec = formspec.."list[detached:"..player_name.."_bags;bag2;2.5,1;1,1;]"
 		formspec = formspec.."list[detached:"..player_name.."_bags;bag3;4.5,1;1,1;]"
 		formspec = formspec.."list[detached:"..player_name.."_bags;bag4;6.5,1;1,1;]"
-		return formspec
+		return {formspec=formspec}
 	end,
 })
 
@@ -27,10 +27,10 @@ unified_inventory.register_button("bags", {
 
 for i = 1, 4 do
 	unified_inventory.register_page("bag"..i, {
-		get_formspec = function(player, formspec)
+		get_formspec = function(player)
 			local stack = player:get_inventory():get_stack("bag"..i, 1)
 			local image = stack:get_definition().inventory_image
-			formspec = formspec.."image[7,0;1,1;"..image.."]"
+			local formspec = "image[7,0;1,1;"..image.."]"
 			formspec = formspec.."list[current_player;bag"..i.."contents;0,1;8,3;]"
 			local slots = stack:get_definition().groups.bagslots
 			if slots == 8 then
@@ -40,7 +40,7 @@ for i = 1, 4 do
 			elseif slots == 24 then
 				formspec = formspec.."background[0.06,0.99;7.92,7.52;ui_bags_lg_form.png]"
 			end
-			return formspec
+			return {formspec=formspec}
 		end,
 	})
 end
diff --git a/internal.lua b/internal.lua
index cbd134f..76a242b 100644
--- a/internal.lua
+++ b/internal.lua
@@ -5,18 +5,18 @@ function unified_inventory.get_formspec(player, page)
 	end
 	local player_name = player:get_player_name()
 	unified_inventory.current_page[player_name] = page
+	local pagedef = unified_inventory.pages[page]
 
 	local formspec = "size[14,10]"
-
-	-- Player inventory
-	formspec = formspec .. "list[current_player;main;0,4.5;8,4;]"
+	local fsdata = nil
 
 	-- Background
 	formspec = formspec .. "background[-0.19,-0.2;14.38,10.55;ui_form_bg.png]"
 	
 	-- Current page
 	if unified_inventory.pages[page] then
-		formspec = unified_inventory.pages[page].get_formspec(player, formspec)
+		fsdata = pagedef.get_formspec(player)
+		formspec = formspec .. fsdata.formspec
 	else
 		return "" -- Invalid page name
 	end
@@ -31,6 +31,15 @@ function unified_inventory.get_formspec(player, page)
 		end
 	end
 
+	if fsdata.draw_inventory ~= false then
+		-- Player inventory
+		formspec = formspec .. "list[current_player;main;0,4.5;8,4;]"
+	end
+
+	if fsdata.draw_item_list == false then
+		return formspec
+	end
+
 	-- Controls to flip items pages
 	local start_x = 9.2
 	formspec = formspec .. "image_button["..(start_x + 0.6 * 0)..",9;.8,.8;ui_skip_backward_icon.png;start_list;]"
diff --git a/register.lua b/register.lua
index 9ca1f77..32b4cf9 100644
--- a/register.lua
+++ b/register.lua
@@ -118,7 +118,7 @@ unified_inventory.register_button("clear_inv", {
 unified_inventory.register_page("craft", {
 	get_formspec = function(player, formspec)
 		local player_name = player:get_player_name()
-		formspec = formspec.."background[0.06,0.99;7.92,7.52;ui_crafting_form.png]"
+		local formspec = "background[0.06,0.99;7.92,7.52;ui_crafting_form.png]"
 		formspec = formspec.."label[0,0;Crafting]"
 		formspec = formspec.."list[current_player;craftpreview;6,1;1,1;]"
 		formspec = formspec.."list[current_player;craft;2,1;3,3;]"
@@ -128,14 +128,14 @@ unified_inventory.register_page("craft", {
 			formspec = formspec.."label[0,2.5;Refill:]"
 			formspec = formspec.."list[detached:"..player_name.."refill;main;0,3;1,1;]"
 		end
-		return formspec
+		return {formspec=formspec}
 	end,
 })
 
 unified_inventory.register_page("craftguide", {
-	get_formspec = function(player, formspec)
+	get_formspec = function(player)
 		local player_name = player:get_player_name()
-		formspec = formspec.."background[0.06,0.99;7.92,7.52;ui_craftguide_form.png]"
+		local formspec = "background[0.06,0.99;7.92,7.52;ui_craftguide_form.png]"
 		formspec = formspec.."label[0,0;Crafting Guide]"
 		formspec = formspec.."list[detached:"..player_name.."craftrecipe;output;6,1;1,1;]"
 		formspec = formspec.."label[2,0.5;Input:]"
@@ -176,7 +176,7 @@ unified_inventory.register_page("craftguide", {
 
 		if not craft then
 			craftinv:set_stack("output", 1, nil)
-			return formspec
+			return {formspec=formspec}
 		end
 
 		craftinv:set_stack("output", 1, craft.output)
@@ -209,6 +209,7 @@ unified_inventory.register_page("craftguide", {
 			i = i + 1
 		end
 		end
-		return formspec
+		return {formspec=formspec}
 	end,
 })
+