png_gAMA          107 contrib/libtests/pngunknown.c #define png_gAMA PNG_U32(103,  65,  77,  65)
png_gAMA          116 contrib/tools/pngfix.c #define png_gAMA PNG_U32(103,  65,  77,  65)
png_gAMA          759 pngpriv.h      #define png_gAMA PNG_U32(103,  65,  77,  65)