graphics output (Program Bug and Problems)
when I change the program for the graphics output area, more specifically, the values of the variables of a rectangle or a circle, no change occur in the graphics output. Sometimes, I write first something as the following:
circle 90, 80, 120
Then, the graphics output is correctly represented. But it is only in the first time. If I change the value of x, y, or radius, the previous image keeps being showed. What's the matter?
Thanks for any help!