int fillcolour, int outlinecolour) {}
void draw_circle(drawing *dr, int cx, int cy, int radius,
int fillcolour, int outlinecolour) {}
+char *text_fallback(drawing *dr, const char *const *strings, int nstrings)
+{ return dupstr(strings[0]); }
void clip(drawing *dr, int x, int y, int w, int h) {}
void unclip(drawing *dr) {}
void start_draw(drawing *dr) {}