`TCheckbox`
pl	ro	Enabled
pl	ro	CanExpandHeight
pl	ro	CanExpandWidth
pl	ro	Checked
pl	ro	Text

`TCustomCheckbox`
pt		Checked

`TWidget`
pt		CanExpandWidth
pt		CanExpandHeight
pt		Cursor
pt		Text
pt		Color
		Parent
	ro	Origin
	ro	BoundsSize
	ro	BoundsRect
	ro	Left
	ro	Top
	ro	Width
	ro	Height
	ro	MinSize
	ro	MaxSize
	ro	DefSize
	ro	ClientRect
		Style
		Enabled
		Visible