
void main()
main: scope:[main]  from
  [0] *SCREEN = b
  [1] *(SCREEN+2) = 0
  [2] *(SCREEN+3) = 0
  [3] *(SCREEN+5) = 0
  [4] *(SCREEN+5) = 0
  to:main::@return
main::@return: scope:[main]  from main
  [5] return 
  to:@return
