174    void               (*insert)(png_structp, png_infop, int, png_charpp);
776    volatile png_infop info_ptr = NULL;  in write_png()
788       png_infop nv_info = info_ptr;  in write_png()
984       png_infop nv_info = info_ptr;  in write_png()
1154 insert_iCCP(png_structp png_ptr, png_infop info_ptr, int nparams,  in insert_iCCP()
1259 set_text(png_structp png_ptr, png_infop info_ptr, png_textp text,  in set_text()
1299 insert_tEXt(png_structp png_ptr, png_infop info_ptr, int nparams,  in insert_tEXt()
1310 insert_zTXt(png_structp png_ptr, png_infop info_ptr, int nparams,  in insert_zTXt()
1322 insert_iTXt(png_structp png_ptr, png_infop info_ptr, int nparams,  in insert_iTXt()
1336 insert_hIST(png_structp png_ptr, png_infop info_ptr, int nparams,  in insert_hIST()
1378 insert_sBIT(png_structp png_ptr, png_infop info_ptr, int nparams,  in insert_sBIT()
1416 insert_sPLT(png_structp png_ptr, png_infop info_ptr, int nparams, png_charpp params)
1459    void (*insert)(png_structp, png_infop, int, png_charpp),  in make_insert()  argument