UPC barcodes contain key information that can make small businesses more efficient and easier to manage. Many, or all, of the products featured on this page are from our advertising partners who ...
# Initialize the main application window to create a root context LABEL_WIDTH = 2 * DPI # 600 pixels for 2 inches at 300 DPI LABEL_HEIGHT = 2 * DPI # 600 pixels for 2 inches at 300 DPI """Generate a ...
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