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Clarify the meaning of biSizeImage of BITMAPINFOHEADER (and the like member of BITMAPV4HEADER and BITMAPINFOV5HEADER) when biCompression (or the like member) is BI_RLE8 or BI_RLE4. Is the value equal to the size of the compressed image data in bytes? The uncompressed image data? Either? What if biSizeImage is larger than the data available in the image file?