gdImageCopyMergeGray 3688 gd.c           	gdImageCopyMergeGray(im_dst, im_src, dstX, dstY, srcX, srcY, srcW, srcH, pct);
gdImageCopyMergeGray  673 libgd/gd.h     void gdImageCopyMergeGray(gdImagePtr dst, gdImagePtr src, int dstX, int dstY,
gdImageCopyMergeGray  253 libgd/gdtest.c   gdImageCopyMergeGray (im2, im3, 250, 160, 10, 10, 90, 50, 50);
gdImageCopyMergeGray  254 libgd/gdtest.c   gdImageCopyMergeGray (im2, im3, 80, 70, 10, 10, 90, 50, 50);