diff --git a/addons/material_maker/widgets/node_editor/input.gd b/addons/material_maker/widgets/node_editor/input.gd
index 99289d0..301f98d 100644
--- a/addons/material_maker/widgets/node_editor/input.gd
+++ b/addons/material_maker/widgets/node_editor/input.gd
@@ -1,6 +1,13 @@
 tool
 extends HBoxContainer
 
+func update_up_down_button() -> void:
+	var parent = get_parent()
+	if parent == null:
+		return
+	$Up.disabled = (get_index() == 0)
+	$Down.disabled = (get_index() == get_parent().get_child_count()-2)
+
 func set_model_data(data) -> void:
 	$Name.text = data.name
 	$Label.text = data.label
@@ -23,4 +30,15 @@ func get_model_data() -> Dictionary:
 	return data
 
 func _on_Delete_pressed() -> void:
+	var p = get_parent()
+	p.remove_child(self)
+	p.update_up_down_buttons()
 	queue_free()
+
+func _on_Up_pressed() -> void:
+	get_parent().move_child(self, get_index() - 1)
+	get_parent().update_up_down_buttons()
+
+func _on_Down_pressed() -> void:
+	get_parent().move_child(self, get_index() + 1)
+	get_parent().update_up_down_buttons()
diff --git a/addons/material_maker/widgets/node_editor/input.tscn b/addons/material_maker/widgets/node_editor/input.tscn
index 0f6b2fd..a56a889 100644
--- a/addons/material_maker/widgets/node_editor/input.tscn
+++ b/addons/material_maker/widgets/node_editor/input.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=4 format=2]
+[gd_scene load_steps=6 format=2]
 
 [ext_resource path="res://addons/material_maker/widgets/node_editor/input.gd" type="Script" id=1]
 [ext_resource path="res://addons/material_maker/icons/icons.svg" type="Texture" id=2]
@@ -8,6 +8,16 @@ flags = 4
 atlas = ExtResource( 2 )
 region = Rect2( 0, 16, 16, 16 )
 
+[sub_resource type="AtlasTexture" id=2]
+flags = 4
+atlas = ExtResource( 2 )
+region = Rect2( 18, 48, 12, 16 )
+
+[sub_resource type="AtlasTexture" id=3]
+flags = 4
+atlas = ExtResource( 2 )
+region = Rect2( 34, 48, 12, 16 )
+
 [node name="Parameter" type="HBoxContainer"]
 margin_right = 201.0
 margin_bottom = 24.0
@@ -19,25 +29,39 @@ margin_bottom = 24.0
 icon = SubResource( 1 )
 flat = true
 
-[node name="Name" type="LineEdit" parent="."]
+[node name="Up" type="Button" parent="."]
 margin_left = 32.0
-margin_right = 102.0
+margin_right = 56.0
+margin_bottom = 24.0
+icon = SubResource( 2 )
+flat = true
+
+[node name="Down" type="Button" parent="."]
+margin_left = 60.0
+margin_right = 84.0
+margin_bottom = 24.0
+icon = SubResource( 3 )
+flat = true
+
+[node name="Name" type="LineEdit" parent="."]
+margin_left = 88.0
+margin_right = 158.0
 margin_bottom = 24.0
 rect_min_size = Vector2( 70, 0 )
 hint_tooltip = "Input name"
 text = "name"
 
 [node name="Label" type="LineEdit" parent="."]
-margin_left = 106.0
-margin_right = 176.0
+margin_left = 162.0
+margin_right = 232.0
 margin_bottom = 24.0
 rect_min_size = Vector2( 70, 0 )
 hint_tooltip = "Input Label"
 text = "Label"
 
 [node name="Type" type="OptionButton" parent="."]
-margin_left = 180.0
-margin_right = 284.0
+margin_left = 236.0
+margin_right = 340.0
 margin_bottom = 24.0
 rect_min_size = Vector2( 102, 0 )
 hint_tooltip = "Input flag"
@@ -46,11 +70,13 @@ items = [ "GreyScale", null, false, 0, null, "Color", null, false, 1, null, "RGB
 selected = 0
 
 [node name="Default" type="LineEdit" parent="."]
-margin_left = 288.0
-margin_right = 358.0
+margin_left = 344.0
+margin_right = 414.0
 margin_bottom = 24.0
 rect_min_size = Vector2( 70, 0 )
 hint_tooltip = "Default value"
 size_flags_horizontal = 3
 text = "0.0"
 [connection signal="pressed" from="Delete" to="." method="_on_Delete_pressed"]
+[connection signal="pressed" from="Up" to="." method="_on_Up_pressed"]
+[connection signal="pressed" from="Down" to="." method="_on_Down_pressed"]
diff --git a/addons/material_maker/widgets/node_editor/node_editor.gd b/addons/material_maker/widgets/node_editor/node_editor.gd
index 1afb005..b9f256a 100644
--- a/addons/material_maker/widgets/node_editor/node_editor.gd
+++ b/addons/material_maker/widgets/node_editor/node_editor.gd
@@ -3,6 +3,10 @@ extends WindowDialog
 
 var model_data = null
 
+onready var parameter_list : VBoxContainer = $Sizer/Tabs/General/Parameters/Sizer
+onready var input_list : VBoxContainer = $Sizer/Tabs/General/Inputs/Sizer
+onready var output_list : VBoxContainer = $Sizer/Tabs/Outputs/Outputs/Sizer
+
 onready var main_code_editor : TextEdit = $"Sizer/Tabs/Main Code"
 onready var instance_functions_editor : TextEdit = $"Sizer/Tabs/Instance Functions"
 onready var global_functions_editor : TextEdit = $"Sizer/Tabs/Global Functions"
@@ -29,13 +33,16 @@ func set_model_data(data) -> void:
 		$Sizer/Tabs/General/Name/Name.text = data.name
 	if data.has("parameters"):
 		for p in data.parameters:
-			add_item($Sizer/Tabs/General/Parameters/Sizer, ParameterEditor).set_model_data(p)
+			add_item(parameter_list, ParameterEditor).set_model_data(p)
+		parameter_list.update_up_down_buttons()
 	if data.has("inputs"):
 		for i in data.inputs:
-			add_item($Sizer/Tabs/General/Inputs/Sizer, InputEditor).set_model_data(i)
+			add_item(input_list, InputEditor).set_model_data(i)
+		input_list.update_up_down_buttons()
 	if data.has("outputs"):
 		for o in data.outputs:
-			add_item($Sizer/Tabs/Outputs/Outputs/Sizer, OutputEditor).set_model_data(o)
+			add_item(output_list, OutputEditor).set_model_data(o)
+		output_list.update_up_down_buttons()
 	if data.has("global"):
 		global_functions_editor.text = data.global
 	if data.has("instance"):
@@ -51,27 +58,30 @@ func get_model_data() -> Dictionary:
 		code=main_code_editor.text
 	}
 	data.parameters = []
-	for p in $Sizer/Tabs/General/Parameters/Sizer.get_children():
+	for p in parameter_list.get_children():
 		if p.has_method("get_model_data"):
 			data.parameters.append(p.get_model_data())
 	data.inputs = []
-	for i in $Sizer/Tabs/General/Inputs/Sizer.get_children():
+	for i in input_list.get_children():
 		if i.has_method("get_model_data"):
 			data.inputs.append(i.get_model_data())
 	data.outputs = []
-	for o in $Sizer/Tabs/Outputs/Outputs/Sizer.get_children():
+	for o in output_list.get_children():
 		if o.has_method("get_model_data"):
 			data.outputs.append(o.get_model_data())
 	return data
 
 func _on_AddParameter_pressed() -> void:
-	add_item($Sizer/Tabs/General/Parameters/Sizer, ParameterEditor)
+	add_item(parameter_list, ParameterEditor)
+	parameter_list.update_up_down_buttons()
 
 func _on_AddInput_pressed() -> void:
-	add_item($Sizer/Tabs/General/Inputs/Sizer, InputEditor)
+	add_item(input_list, InputEditor)
+	input_list.update_up_down_buttons()
 
 func _on_AddOutput_pressed() -> void:
-	add_item($Sizer/Tabs/Outputs/Outputs/Sizer, OutputEditor)
+	add_item(output_list, OutputEditor)
+	output_list.update_up_down_buttons()
 
 func _on_Apply_pressed() -> void:
 	emit_signal("node_changed", get_model_data())
diff --git a/addons/material_maker/widgets/node_editor/node_editor.tscn b/addons/material_maker/widgets/node_editor/node_editor.tscn
index feb1678..e12e89b 100644
--- a/addons/material_maker/widgets/node_editor/node_editor.tscn
+++ b/addons/material_maker/widgets/node_editor/node_editor.tscn
@@ -1,11 +1,12 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=7 format=2]
 
 [ext_resource path="res://addons/material_maker/widgets/node_editor/node_editor.gd" type="Script" id=1]
-[ext_resource path="res://addons/material_maker/icons/icons.svg" type="Texture" id=2]
+[ext_resource path="res://addons/material_maker/widgets/node_editor/node_editor_item_list.gd" type="Script" id=2]
+[ext_resource path="res://addons/material_maker/icons/icons.svg" type="Texture" id=3]
 
 [sub_resource type="AtlasTexture" id=1]
 flags = 4
-atlas = ExtResource( 2 )
+atlas = ExtResource( 3 )
 region = Rect2( 48, 0, 16, 16 )
 
 [sub_resource type="DynamicFontData" id=2]
@@ -16,7 +17,7 @@ size = 12
 font_data = SubResource( 2 )
 
 [node name="NodeEditor" type="WindowDialog"]
-margin_right = 833.0
+margin_right = 896.0
 margin_bottom = 398.0
 popup_exclusive = true
 window_title = "Node Editor"
@@ -29,7 +30,7 @@ size_flags_horizontal = 3
 size_flags_vertical = 3
 
 [node name="Tabs" type="TabContainer" parent="Sizer"]
-margin_right = 833.0
+margin_right = 896.0
 margin_bottom = 374.0
 size_flags_horizontal = 3
 size_flags_vertical = 3
@@ -44,7 +45,7 @@ margin_right = -4.0
 margin_bottom = -4.0
 
 [node name="Name" type="HBoxContainer" parent="Sizer/Tabs/General"]
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 24.0
 size_flags_horizontal = 3
 
@@ -56,28 +57,29 @@ text = "Name:"
 
 [node name="Name" type="LineEdit" parent="Sizer/Tabs/General/Name"]
 margin_left = 46.0
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 24.0
 size_flags_horizontal = 3
 
 [node name="LabelParameters" type="Label" parent="Sizer/Tabs/General"]
 margin_top = 28.0
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 42.0
 text = "Parameters:"
 
 [node name="Parameters" type="ScrollContainer" parent="Sizer/Tabs/General"]
 margin_top = 46.0
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 181.0
 size_flags_horizontal = 3
 size_flags_vertical = 3
 scroll_horizontal_enabled = false
 
 [node name="Sizer" type="VBoxContainer" parent="Sizer/Tabs/General/Parameters"]
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 22.0
 size_flags_horizontal = 3
+script = ExtResource( 2 )
 
 [node name="AddParameter" type="Button" parent="Sizer/Tabs/General/Parameters/Sizer"]
 margin_right = 28.0
@@ -88,22 +90,23 @@ flat = true
 
 [node name="LabelInputs" type="Label" parent="Sizer/Tabs/General"]
 margin_top = 185.0
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 199.0
 text = "Inputs:"
 
 [node name="Inputs" type="ScrollContainer" parent="Sizer/Tabs/General"]
 margin_top = 203.0
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 338.0
 size_flags_horizontal = 3
 size_flags_vertical = 3
 scroll_horizontal_enabled = false
 
 [node name="Sizer" type="VBoxContainer" parent="Sizer/Tabs/General/Inputs"]
-margin_right = 825.0
+margin_right = 888.0
 margin_bottom = 22.0
 size_flags_horizontal = 3
+script = ExtResource( 2 )
 
 [node name="AddInput" type="Button" parent="Sizer/Tabs/General/Inputs/Sizer"]
 margin_right = 28.0
@@ -138,6 +141,7 @@ scroll_horizontal_enabled = false
 margin_right = 825.0
 margin_bottom = 22.0
 size_flags_horizontal = 3
+script = ExtResource( 2 )
 
 [node name="AddOutput" type="Button" parent="Sizer/Tabs/Outputs/Outputs/Sizer"]
 margin_right = 28.0
@@ -187,9 +191,9 @@ syntax_highlighting = true
 show_line_numbers = true
 
 [node name="HBoxContainer" type="HBoxContainer" parent="Sizer"]
-margin_left = 307.0
+margin_left = 339.0
 margin_top = 378.0
-margin_right = 525.0
+margin_right = 557.0
 margin_bottom = 398.0
 size_flags_horizontal = 4
 
diff --git a/addons/material_maker/widgets/node_editor/node_editor_item_list.gd b/addons/material_maker/widgets/node_editor/node_editor_item_list.gd
new file mode 100644
index 0000000..79ce49b
--- /dev/null
+++ b/addons/material_maker/widgets/node_editor/node_editor_item_list.gd
@@ -0,0 +1,7 @@
+tool
+extends VBoxContainer
+
+func update_up_down_buttons() -> void:
+	for c in get_children():
+		if ! (c is Button):
+			c.update_up_down_button()
diff --git a/addons/material_maker/widgets/node_editor/output.gd b/addons/material_maker/widgets/node_editor/output.gd
index ebeae0c..ca9d8c0 100644
--- a/addons/material_maker/widgets/node_editor/output.gd
+++ b/addons/material_maker/widgets/node_editor/output.gd
@@ -1,6 +1,13 @@
 tool
 extends HBoxContainer
 
+func update_up_down_button() -> void:
+	var parent = get_parent()
+	if parent == null:
+		return
+	$Up.disabled = (get_index() == 0)
+	$Down.disabled = (get_index() == get_parent().get_child_count()-2)
+
 func set_model_data(data) -> void:
 	if data.has("rgb"):
 		$Type.selected = 1
@@ -21,4 +28,15 @@ func get_model_data() -> Dictionary:
 		return { f=$Value.text }
 
 func _on_Delete_pressed() -> void:
+	var p = get_parent()
+	p.remove_child(self)
+	p.update_up_down_buttons()
 	queue_free()
+
+func _on_Up_pressed() -> void:
+	get_parent().move_child(self, get_index() - 1)
+	get_parent().update_up_down_buttons()
+
+func _on_Down_pressed() -> void:
+	get_parent().move_child(self, get_index() + 1)
+	get_parent().update_up_down_buttons()
diff --git a/addons/material_maker/widgets/node_editor/output.tscn b/addons/material_maker/widgets/node_editor/output.tscn
index 1410dcd..bd1d127 100644
--- a/addons/material_maker/widgets/node_editor/output.tscn
+++ b/addons/material_maker/widgets/node_editor/output.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=8 format=2]
 
 [ext_resource path="res://addons/material_maker/widgets/node_editor/output.gd" type="Script" id=1]
 [ext_resource path="res://addons/material_maker/icons/icons.svg" type="Texture" id=2]
@@ -8,12 +8,22 @@ flags = 4
 atlas = ExtResource( 2 )
 region = Rect2( 0, 16, 16, 16 )
 
-[sub_resource type="DynamicFontData" id=2]
+[sub_resource type="AtlasTexture" id=2]
+flags = 4
+atlas = ExtResource( 2 )
+region = Rect2( 18, 48, 12, 16 )
+
+[sub_resource type="AtlasTexture" id=3]
+flags = 4
+atlas = ExtResource( 2 )
+region = Rect2( 34, 48, 12, 16 )
+
+[sub_resource type="DynamicFontData" id=4]
 font_path = "res://addons/material_maker/fonts/hack.ttf"
 
-[sub_resource type="DynamicFont" id=3]
+[sub_resource type="DynamicFont" id=5]
 size = 12
-font_data = SubResource( 2 )
+font_data = SubResource( 4 )
 
 [node name="Output" type="HBoxContainer"]
 margin_right = 251.0
@@ -27,9 +37,23 @@ margin_bottom = 25.0
 icon = SubResource( 1 )
 flat = true
 
-[node name="Type" type="OptionButton" parent="."]
+[node name="Up" type="Button" parent="."]
 margin_left = 32.0
-margin_right = 136.0
+margin_right = 56.0
+margin_bottom = 25.0
+icon = SubResource( 2 )
+flat = true
+
+[node name="Down" type="Button" parent="."]
+margin_left = 60.0
+margin_right = 84.0
+margin_bottom = 25.0
+icon = SubResource( 3 )
+flat = true
+
+[node name="Type" type="OptionButton" parent="."]
+margin_left = 88.0
+margin_right = 192.0
 margin_bottom = 25.0
 rect_min_size = Vector2( 102, 0 )
 hint_tooltip = "Input flag"
@@ -38,12 +62,14 @@ items = [ "GreyScale", null, false, 0, null, "Color", null, false, 1, null, "RGB
 selected = 0
 
 [node name="Value" type="LineEdit" parent="."]
-margin_left = 140.0
-margin_right = 251.0
+margin_left = 196.0
+margin_right = 290.0
 margin_bottom = 25.0
 hint_tooltip = "Default value"
 size_flags_horizontal = 3
-custom_fonts/font = SubResource( 3 )
+custom_fonts/font = SubResource( 5 )
 text = "0.0"
 context_menu_enabled = false
 [connection signal="pressed" from="Delete" to="." method="_on_Delete_pressed"]
+[connection signal="pressed" from="Up" to="." method="_on_Up_pressed"]
+[connection signal="pressed" from="Down" to="." method="_on_Down_pressed"]
diff --git a/addons/material_maker/widgets/node_editor/parameter.gd b/addons/material_maker/widgets/node_editor/parameter.gd
index d5c5910..f6aab20 100644
--- a/addons/material_maker/widgets/node_editor/parameter.gd
+++ b/addons/material_maker/widgets/node_editor/parameter.gd
@@ -7,6 +7,13 @@ func _ready() -> void:
 		$Type.add_item(t.name)
 	_on_Type_item_selected($Type.selected)
 
+func update_up_down_button() -> void:
+	var parent = get_parent()
+	if parent == null:
+		return
+	$Up.disabled = (get_index() == 0)
+	$Down.disabled = (get_index() == get_parent().get_child_count()-2)
+
 func set_model_data(data) -> void:
 	if data.has("name"):
 		$Name.text = data.name
@@ -28,8 +35,19 @@ func get_model_data() -> Dictionary:
 	return data
 
 func _on_Delete_pressed() -> void:
+	var p = get_parent()
+	p.remove_child(self)
+	p.update_up_down_buttons()
 	queue_free()
 
+func _on_Up_pressed() -> void:
+	get_parent().move_child(self, get_index() - 1)
+	get_parent().update_up_down_buttons()
+
+func _on_Down_pressed() -> void:
+	get_parent().move_child(self, get_index() + 1)
+	get_parent().update_up_down_buttons()
+
 func _on_Type_item_selected(ID) -> void:
 	for t in $Types.get_children():
 		t.visible = false
diff --git a/addons/material_maker/widgets/node_editor/parameter.tscn b/addons/material_maker/widgets/node_editor/parameter.tscn
index 43b3a8a..907a1a8 100644
--- a/addons/material_maker/widgets/node_editor/parameter.tscn
+++ b/addons/material_maker/widgets/node_editor/parameter.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=10 format=2]
+[gd_scene load_steps=12 format=2]
 
 [ext_resource path="res://addons/material_maker/widgets/node_editor/parameter.gd" type="Script" id=1]
 [ext_resource path="res://addons/material_maker/icons/icons.svg" type="Texture" id=2]
@@ -14,6 +14,16 @@ flags = 4
 atlas = ExtResource( 2 )
 region = Rect2( 0, 16, 16, 16 )
 
+[sub_resource type="AtlasTexture" id=2]
+flags = 4
+atlas = ExtResource( 2 )
+region = Rect2( 18, 48, 12, 16 )
+
+[sub_resource type="AtlasTexture" id=3]
+flags = 4
+atlas = ExtResource( 2 )
+region = Rect2( 34, 48, 12, 16 )
+
 [node name="Parameter" type="HBoxContainer"]
 margin_right = 201.0
 margin_bottom = 24.0
@@ -25,31 +35,45 @@ margin_bottom = 24.0
 icon = SubResource( 1 )
 flat = true
 
-[node name="Name" type="LineEdit" parent="."]
+[node name="Up" type="Button" parent="."]
 margin_left = 32.0
-margin_right = 102.0
+margin_right = 56.0
+margin_bottom = 24.0
+icon = SubResource( 2 )
+flat = true
+
+[node name="Down" type="Button" parent="."]
+margin_left = 60.0
+margin_right = 84.0
+margin_bottom = 24.0
+icon = SubResource( 3 )
+flat = true
+
+[node name="Name" type="LineEdit" parent="."]
+margin_left = 88.0
+margin_right = 158.0
 margin_bottom = 24.0
 rect_min_size = Vector2( 70, 0 )
 text = "name"
 
 [node name="Label" type="LineEdit" parent="."]
-margin_left = 106.0
-margin_right = 176.0
+margin_left = 162.0
+margin_right = 232.0
 margin_bottom = 24.0
 rect_min_size = Vector2( 70, 0 )
 text = "Label"
 
 [node name="Type" type="OptionButton" parent="."]
-margin_left = 180.0
-margin_right = 249.0
+margin_left = 236.0
+margin_right = 305.0
 margin_bottom = 24.0
 text = "float"
 items = [ "float", null, false, -1, null, "size", null, false, -1, null, "enum", null, false, -1, null, "boolean", null, false, -1, null, "color", null, false, -1, null, "gradient", null, false, -1, null ]
 selected = 0
 
 [node name="Types" type="HBoxContainer" parent="."]
-margin_left = 253.0
-margin_right = 800.0
+margin_left = 309.0
+margin_right = 856.0
 margin_bottom = 24.0
 
 [node name="float" parent="Types" instance=ExtResource( 3 )]
@@ -79,4 +103,6 @@ margin_left = 551.0
 margin_right = 725.0
 margin_bottom = 30.0
 [connection signal="pressed" from="Delete" to="." method="_on_Delete_pressed"]
+[connection signal="pressed" from="Up" to="." method="_on_Up_pressed"]
+[connection signal="pressed" from="Down" to="." method="_on_Down_pressed"]
 [connection signal="item_selected" from="Type" to="." method="_on_Type_item_selected"]
diff --git a/addons/material_maker/widgets/node_editor/parameter_boolean.tscn b/addons/material_maker/widgets/node_editor/parameter_boolean.tscn
index a7b0855..361ecae 100644
--- a/addons/material_maker/widgets/node_editor/parameter_boolean.tscn
+++ b/addons/material_maker/widgets/node_editor/parameter_boolean.tscn
@@ -3,44 +3,12 @@
 [ext_resource path="res://addons/material_maker/widgets/node_editor/parameter_boolean.gd" type="Script" id=1]
 
 [node name="boolean" type="HBoxContainer"]
-
 visible = false
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
 margin_right = 74.0
 margin_bottom = 24.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-mouse_filter = 1
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 1
-alignment = 0
 script = ExtResource( 1 )
 
-[node name="Default" type="CheckBox" parent="." index="0"]
-
-anchor_left = 0.0
-anchor_top = 0.0
-anchor_right = 0.0
-anchor_bottom = 0.0
+[node name="Default" type="CheckBox" parent="."]
 margin_right = 74.0
 margin_bottom = 24.0
-rect_pivot_offset = Vector2( 0, 0 )
-rect_clip_content = false
-focus_mode = 2
-mouse_filter = 0
-mouse_default_cursor_shape = 0
-size_flags_horizontal = 1
-size_flags_vertical = 1
-toggle_mode = true
-enabled_focus_mode = 2
-shortcut = null
-group = null
 text = "Default"
-flat = false
-align = 0
-
-