+struct screen *fract_screen(void);
+struct screen *grise_screen(void);
+struct screen *polytest_screen(void);
+struct screen *plasma_screen(void);
+struct screen *bump_screen(void);
+struct screen *thunder_screen(void);
+struct screen *metaballs_screen(void);
+struct screen *greets_screen(void);
+struct screen *infcubes_screen(void);
+struct screen *hairball_screen(void);