Visual Basic Control Prefixes
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frm = Form
btn = Button
lbl = Label
txt = TextBox
rdo = RadioButton
chk = CheckBox
tmr = Timer
pic = PictureBox
img = Image
lin = Line
shp = Shape
vsb = VerticalScrollbar
hsb = HorizontalScrollbar
fra = Frame
lst = ListBox
mnu = Menu
pnl = Panel