391 struct display  struct
393    jmp_buf          error_return;      /* Where to go to on error */
394    unsigned int     errset;            /* error_return is set */
396    const char      *operation;         /* What is happening */
397    const char      *filename;          /* The name of the original file */
398    const char      *output_file;       /* The name of the output file */
401    FILE            *fp;
406    png_alloc_size_t read_size;
407    png_structp      read_pp;
408    png_infop        ip;
410       png_textp     text_ptr; /* stash of text chunks */
411       int           num_text;
412       int           text_stashed;
439    png_uint_32      options;             /* See display_log below */  argument
440    png_byte         entry[option_count]; /* The selected entry+1 of an option
443    int              value[option_count]; /* Corresponding value */
449    unsigned int     csp;               /* next stack entry to use */
450    unsigned int     nsp;               /* highest active entry+1 found so far */
455    unsigned int     tsp;               /* nsp from the last run; this is the
482 display_init(struct display *dp)  in display_init()  argument