Click the green flag and then shift click it For the slider, 0 is off, 1 is on. Other slider is a chance, lower numbers are higher chances with 1 being guaranteed bugg and 1000 being lowest chance. Buggs are genetic mutations. After clicking stop, the option to debugg or check for buggs will be available.
No images for this one because it runs too fast DNA actually has a mutation rate of 1/200 to 1/400