BorderRepeat
The enumeration over all possible border repeat values.
Repeat = 1
Keyword indicating that the image must be repeated until it
fills the gap between the two borders.
Round = 2
Keyword indicating that the image must be repeated until it
fills the gap between the two borders. If the image doesn't fit
after being repeated an integral number of times, the image is
rescaled to fit.
Stretch = 0
Keyword indicating that the image must be stretched to fill
the gap between the two borders.