long xorigin, yorigin; /* where is (0,0) of the graph */
long ximg, yimg; /* total size of the image */
+ size_t rendered_image_size;
double zoom;
double magfact; /* numerical magnitude */
long base; /* 1000 or 1024 depending on what we graph */
int extra_flags; /* flags for boolean options */
/* data elements */
+ unsigned char *rendered_image;
long prt_c; /* number of print elements */
long gdes_c; /* number of graphics elements */
graph_desc_t *gdes; /* points to an array of graph elements */