png_zTXt          300 contrib/libtests/pngunknown.c    { "zTXt", PNG_INFO_zTXt, png_zTXt,
png_zTXt          804 contrib/tools/pngfix.c       case png_sPLT: case png_sTER: case png_tEXt: case png_tIME: case png_zTXt:
png_zTXt         2906 contrib/tools/pngfix.c       case png_zTXt: case png_iCCP:
png_zTXt          417 pngpread.c        else if (chunk_name == png_zTXt)
png_zTXt          241 pngread.c            else if (chunk_name == png_zTXt)
png_zTXt          898 pngread.c            else if (chunk_name == png_zTXt)
png_zTXt         1658 pngwutil.c        if (png_text_compress(png_ptr, png_zTXt, &comp, key_len) != Z_OK)
png_zTXt         1662 pngwutil.c        png_write_chunk_header(png_ptr, png_zTXt, key_len + comp.output_len);