diff --git a/logic/basic_terminal.lua b/logic/basic_terminal.lua
index bb5b8d0..88febe5 100644
--- a/logic/basic_terminal.lua
+++ b/logic/basic_terminal.lua
@@ -124,10 +124,9 @@ local function get_action(nvm, fields)
 	if nvm.status == "" then
 		nvm.status = "init"
 	end
-	print("get_action", nvm.status, dump(fields))
+	--print("get_action", nvm.status, dump(fields))
 	for _,key in ipairs(keys) do
 		if fields[key] and Actions[nvm.status] and Actions[nvm.status][key] then
-			print("get_action", nvm.status, key)
 			return Actions[nvm.status][key]
 		end
 	end
@@ -393,21 +392,34 @@ minetest.register_node("techage:basic_terminal", {
 -- Register VM external/callback functions
 --
 local function get_num_param(pos, num_param)
+	local payload3 = 0
 	local payload2 = 0
 	local payload1 = 0
 	local cmnd, num, owner, own_num
 
-	if num_param == 4 then
+	if num_param == 5 then
+		payload3 = nanobasic.pop_num(pos) or 0
+		if payload3 >= 0x8000000 then
+			payload3 = payload3 - 0x100000000
+		end
+	end
+	if num_param >= 4 then
 		payload2 = nanobasic.pop_num(pos) or 0
+		if payload2 >= 0x8000000 then
+			payload2 = payload2 - 0x100000000
+		end
 	end
 	if num_param >= 3 then
 		payload1 = nanobasic.pop_num(pos) or 0
+		if payload1 >= 0x8000000 then
+			payload1 = payload1 - 0x100000000
+		end
 	end
 	cmnd = nanobasic.pop_num(pos)
 	num = nanobasic.pop_num(pos) or 0
 	owner = M(pos):get_string("owner")
 	own_num = M(pos):get_string("node_number")
-	return owner, num, own_num, {payload1, payload2}
+	return owner, num, own_num, {payload1, payload2, payload3}
 end
 
 local function get_str_param(pos, num_param)
@@ -424,10 +436,11 @@ local function get_str_param(pos, num_param)
 	return owner, num, own_num, payload1
 end
 
-local function error_handling(pos, sts)
+local function error_handling(pos, num, sts)
 	local nvm = techage.get_nvm(pos)
 	if sts > 0 and nvm.error_label_addr and nvm.error_label_addr > 0 then
 		local err = ErrorStr[sts] or "unknown error"
+		nanobasic.push_num(pos, num)
 		nanobasic.push_str(pos, err)
 		nanobasic.set_pc(pos, nvm.error_label_addr)
 	end
@@ -470,10 +483,10 @@ register_ext_function("time", {}, nanobasic.NB_NUM, function(pos, nvm)
 	return true
 end)
 
--- num: cmd(num: node_num, num: cmnd, any: pyld1, any: pyld2)
-register_ext_function("cmd", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_ANY, nanobasic.NB_ANY}, nanobasic.NB_NUM, function(pos, nvm)
+-- num: cmd(num: node_num, num: cmnd, any: pyld1, num: pyld2, num: pyld3)
+register_ext_function("cmd", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_ANY, nanobasic.NB_ANY, nanobasic.NB_ANY}, nanobasic.NB_NUM, function(pos, nvm)
 	local num_param = nanobasic.stack_depth(pos)
-	if num_param >= 2 and num_param <= 4 then
+	if num_param >= 2 and num_param <= 5 then
 		local cmnd = nanobasic.peek_num(pos, num_param - 1) or 0
 		if cmnd < 64 then -- command with payload as number(s)
 			local owner, num, own_num, payload = get_num_param(pos, num_param)
@@ -481,10 +494,10 @@ register_ext_function("cmd", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_A
 				techage.counting_add(owner, 1)
 				local sts, resp = techage.beduino_send_cmnd(own_num, num, cmnd, payload)
 				nanobasic.push_num(pos, sts)
-				error_handling(pos, sts)
+				error_handling(pos, num, sts)
 			else
 				nanobasic.push_num(pos, 4)
-				error_handling(pos, 4)
+				error_handling(pos, num, 4)
 			end
 		elseif cmnd < 128 then -- command with payload as string
 			local owner, num, own_num, payload = get_str_param(pos, num_param)
@@ -492,40 +505,39 @@ register_ext_function("cmd", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_A
 				techage.counting_add(owner, 1)
 				local sts, resp = techage.beduino_send_cmnd(own_num, num, cmnd, payload)
 				nanobasic.push_num(pos, sts)
-				error_handling(pos, sts)
+				error_handling(pos, num, sts)
 			else
 				nanobasic.push_num(pos, 4)
-				error_handling(pos, 4)
+				error_handling(pos, num, 4)
 			end
 		else -- request with payload as number(s) and result as number
 			local owner, num, own_num, payload = get_num_param(pos, num_param)
 			if techage.not_protected(tostring(num), owner) then
 				techage.counting_add(owner, 1)
 				local sts, resp = techage.beduino_request_data(own_num, num, cmnd, payload)
-				print("cmd resp", sts, dump(resp))
 				if type(resp) == "table" then
 					nanobasic.push_num(pos, resp[1] or 0)
 				else
 					nanobasic.push_num(pos, 5)
 					sts = 5
 				end
-				error_handling(pos, sts)
+				error_handling(pos, num, sts)
 			else
 				nanobasic.push_num(pos, 4)
-				error_handling(pos, 4)
+				error_handling(pos, num, 4)
 			end
 		end
 	else
 		nanobasic.push_num(pos, 6)
-		error_handling(pos, 6)
+		error_handling(pos, num, 6)
 	end
 	return true
 end)
 
--- str: cmd(num: node_num, num: cmnd, any: pyld1, any: pyld2)
-register_ext_function("cmd$", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_ANY, nanobasic.NB_ANY}, nanobasic.NB_STR, function(pos, nvm)
+-- str: cmd(num: node_num, num: cmnd, any: pyld1, any: pyld2, num: pyld3)
+register_ext_function("cmd$", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_ANY, nanobasic.NB_ANY, nanobasic.NB_ANY}, nanobasic.NB_STR, function(pos, nvm)
 	local num_param = nanobasic.stack_depth(pos)
-	if num_param >= 2 and num_param <= 4 then
+	if num_param >= 2 and num_param <= 5 then
 		local cmnd = nanobasic.peek_num(pos, num_param - 1) or 0
 		if cmnd >= 128 then -- request with payload as number(s) and result as string
 			local owner, num, own_num, payload = get_num_param(pos, num_param)
@@ -538,15 +550,15 @@ register_ext_function("cmd$", {nanobasic.NB_NUM, nanobasic.NB_NUM, nanobasic.NB_
 					nanobasic.push_str(pos, "")
 					sts = 5
 				end
-				error_handling(pos, sts)
+				error_handling(pos, num, sts)
 			else
 				nanobasic.push_str(pos, "")
-				error_handling(pos, 4)
+				error_handling(pos, num, 4)
 			end
 		end
 	else
 		nanobasic.push_str(pos, "")
-		error_handling(pos, 6)
+		error_handling(pos, num, 6)
 	end
 	return true
 end)
@@ -619,7 +631,6 @@ end)
 -- str: iname(str: item_name)
 register_ext_function("iname$", {nanobasic.NB_STR}, nanobasic.NB_STR, function(pos, nvm)
 	local item_name = nanobasic.pop_str(pos) or ""
-	print("iname", item_name)
 	local item = minetest.registered_items[item_name]
 	if item and item.description then
 		local s = minetest.get_translated_string("en", item.description)
@@ -641,6 +652,7 @@ register_action({"init", "stopped", "error", "break"}, "Edit", function(pos, nvm
 end)
 
 register_action({"edit"}, "Save", function(pos, nvm, fields)
+	nanobasic.clear_screen(pos)
 	local code = sort_lines(pos, nvm, fields.code)
 	if code == nil then
 		nvm.status = "error"
@@ -654,6 +666,7 @@ register_action({"edit"}, "Save", function(pos, nvm, fields)
 end)
 
 register_action({"edit"}, "Renum", function(pos, nvm, fields)
+	nanobasic.clear_screen(pos)
 	local code = sort_lines(pos, nvm, fields.code)
 	if code == nil then
 		nvm.status = "error"
@@ -663,7 +676,6 @@ register_action({"edit"}, "Renum", function(pos, nvm, fields)
 		return nanobasic.get_screen_buffer(pos) or ""
 	end
 	code = renumber_lines(pos, nvm, code)
-	print("Renum", code)
 	M(pos):set_string("code", code)
 	return code
 end)
@@ -686,7 +698,6 @@ register_action({"init", "edit", "stopped"}, "Run", function(pos, nvm, fields)
 		nvm.input = ""
 		nvm.variables = nanobasic.get_variable_list(pos)
 		nvm.error_label_addr = nanobasic.get_label_address(pos, "65000") or 0
-		--print("nvm.variables", dump(nvm.variables))
 		minetest.get_node_timer(pos):start(0.2)
 		return nanobasic.get_screen_buffer(pos) or ""
 	else
@@ -721,11 +732,9 @@ register_action({"break"}, "Enter", function(pos, nvm, fields)
 	if var_name == nil then
 		 var_name, arr_idx = s, "0"
 	end
-	print("fields.input:lower()", s, var_name, arr_idx)
 	if nvm.variables[var_name] then
 		arr_idx = tonumber(arr_idx)
 		local var_type, var_idx = nvm.variables[var_name][1], nvm.variables[var_name][2]
-		print("break / Enter", var_type, var_idx, arr_idx, dump(nvm.variables[var_name]))
 		local val = nanobasic.read_variable(pos, var_type, var_idx, arr_idx)
 		if var_type == nanobasic.NB_NUM then
 			nanobasic.print(pos, string.format("%s = %u\n", var_name, val));
@@ -767,13 +776,11 @@ end)
 
 register_action(States, "larger", function(pos, nvm, fields)
 	nvm.trm_text_size = math.min((nvm.trm_text_size or 0) + 1, 8)
-	print("larger", nvm.trm_text_size)
 	return fields.code or nanobasic.get_screen_buffer(pos) or ""
 end)
 
 register_action(States, "smaller", function(pos, nvm, fields)
 	nvm.trm_text_size = math.max((nvm.trm_text_size or 0) - 1, -8)
-	print("smaller", nvm.trm_text_size)
 	return fields.code or nanobasic.get_screen_buffer(pos) or ""
 end)
 
@@ -805,7 +812,6 @@ end)
 
 techage.register_node({"techage:basic_terminal"}, {
 	on_node_load = function(pos)
-		print("register_lbm")
 		nanobasic.vm_restore(pos)
 		local nvm = techage.get_nvm(pos)
 		if nvm.status == "running" then