FILL_NONE = "none"
FILL_WIDTH = "x"
FILL_HEIGHT = "y"
FILL_BOTH = "both"

EXPAND_NO = "no"
EXPAND_YES = "yes"

SIDE_LEFT = "left"
SIDE_RIGHT = "right"
SIDE_TOP = "top"
SIDE_BOTTOM = "bottom"

ANCHOR_NW = "nw"
AMCHOR_N = "n"
ANCHOR_NE = "ne"
ANCHOR_W = "w"
ANCHOR_CENTER = "center"
ANCHOR_E = "e"
ANCHOR_SW = "sw"
ANCHOR_S = "s"
ANCHOR_SE = "se"

STYLE_LIGHT = "light"
STYLE_DARK = "dark"

EVENT_BUTTON1 = "<Button-1>"
EVENT_BUTTON2 = "<Button-2>"
EVENT_BUTTON3 = "<Button-3>"
EVENT_BUTTON_ALL = "<Button>"

EVENT_ENTER = "<Enter>"
EVENT_LEAVE = "<Leave>"