cmsSigVcgtType   5260 src/cmstypes.c {TYPE_HANDLER(cmsSigVcgtType,                  vcgt),                NULL }
cmsSigVcgtType   5449 src/cmstypes.c     { cmsSigVcgtTag,                { 1, 1, { cmsSigVcgtType},               NULL }, &SupportedTags[60]},