cmsSigUcrBgTag   5433 src/cmstypes.c     { cmsSigUcrBgTag,               { 1, 1, { cmsSigUcrBgType}, NULL},    &SupportedTags[47]},
cmsSigUcrBgTag   5299 testbed/testcms2.c         if (!CheckUcrBg(Pass, h, cmsSigUcrBgTag)) return 0;