def show_start():
    "Display the start menu to the user."
    x, y = map(int, root.geometry().split('+')[1:])
    if run:
        width, height = map(int, root.geometry().split('+')[0].split('x'))
        x += (width - MNU.SCR_W) / 2
        y += (height - MNU.SCR_H) / 2
    root.geometry('%dx%d+%d+%d' % (MNU.SCR_W, MNU.SCR_H, x, y))
    screen.config(width=MNU.SCR_W, height=MNU.SCR_H, background=CLR.MENU_BG)
    screen.delete(Tkinter.ALL)
    screen.create_text(MNU.SCR_W / 2, MNU.SCR_H / 2, text=format_HST(), font=FNT.HS_TEXT, fill=CLR.HS_TEXT)
    button = screen.create_text(MNU.SCR_W / 2, MNU.START, text=STR.PLAY_BT, font=FNT.BT_NORM, fill=CLR.BT_NORM)
    screen.tag_bind(button, '<Enter>', bt_high)
    screen.tag_bind(button, '<Leave>', bt_norm)
    screen.tag_bind(button, '<1>', start_session)
Display the start menu to the user.
recipes/Python/510398_Kaos_Rain_MKv3/recipe-510398.py