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- static char usage[] = "\
- Usage: scale_geom [options]\n\
- -s %d%d%d%d source box (row col #rows #cols)\n\
- -dc %d number of cols in destination file (default = source size) \n\
- -dr %d number of rows in the destination file \n\
- -d %d%d number of cols, rows in file dest file \n\
- -filt %s[%s filter name in x and y (default=triangle)\n\
- \"-filt '?'\" prints a filter catalog\n\
- -supp %f[%f filter support radius\n\
- -blur %f[%f blur factor: >1 is blurry, <1 is sharp\n\
- -window %s[%s window an IIR filter (default=blackman)\n\
- -debug %d print filter coefficients\n\
- -xy filter x before y\n\
- -yx filter y before x\n\
- -2 output image is 2 times the size of the input image\n\
- -3 output image is 3 times the size of the input image\n\
- -plain disable filter coercion\n\
- -keep0 keep zeros in xfilter\n\
- Where %d denotes integer, %f denotes float, %s denotes string,\n\
- and '[' marks optional following args\n\
- ";
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