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To generate hashes and store it in the same folder,

	1) sudo make 
		(set resoluton in DPI by passing argument
			example: sudo make DPI=100, if not specified,default is 72)

	2) Usage   ./hash <font_file> <pt_size> <render_mode>
	
        Hashes will be saved in a file named $(font)_$(pt_size)_$(render_mode).hash 

        By default, hashes of 256-level gray bitmaps will be generated

        Values for render_mode    0 - monochrome
                                  1 - anti-aliased
                                  2 - lcd horizontal-RGB
                                  3 - lcd vertical-RGB