Use upper-cased first letter at the start of comment sentences

demos/gui/drag_and_drop/drag_drop_script.gd

@@ -3,12 +3,12 @@ extends ColorPickerButton
 
 
 func get_drag_data(pos):
-	# use another colorpicker as drag preview
+	# Use another colorpicker as drag preview
 	var cpb = ColorPickerButton.new()
 	cpb.set_color(get_color())
 	cpb.set_size(Vector2(50, 50))
 	set_drag_preview(cpb)
-	# return color as drag data
+	# Return color as drag data
 	return get_color()
 
 

demos/gui/input_mapping/controls.gd

@@ -1,3 +1,6 @@
+
+extends Control
+
 # Note for the reader:
 #
 # This demo conveniently uses the same names for actions and for the container nodes
@@ -9,9 +12,7 @@
 # action and the node, e.g.:
 # button.connect("pressed", self, "wait_for_input", [ button, action ])
 
-extends Control
-
-# member variables
+# Member variables
 var player_actions = [ "move_up", "move_down", "move_left", "move_right", "jump" ]
 var action # To register the action the UI is currently handling
 var button # Button node corresponding to the above action

demos/gui/translation/main.gd

@@ -10,7 +10,7 @@ func _goto_scene():
 
 
 func _on_system_pressed():
-	# will autodetect based on system, then fall back
+	# Will autodetect based on system, then fall back
 	# to english if not found
 	_goto_scene()