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This is the png file that will contain the numbers you will be using to print to the screen. The numbers can be arranged depending on functionality you use to print the numbers to the screen, as well as how you would like to define the regions. One way to go about this is to have the numbers arranged in symmetrical tiles and define them using the “define_region_matrix” function. With this you can assign an int value to each tile/number and call that value to print your texture region to the screen.