png_tEXt          122 contrib/libtests/pngunknown.c #define png_tEXt PNG_U32(116,  69,  88, 116)
png_tEXt          131 contrib/tools/pngfix.c #define png_tEXt PNG_U32(116,  69,  88, 116)
png_tEXt          774 pngpriv.h      #define png_tEXt PNG_U32(116,  69,  88, 116)