anchor.diff:        if ((data.nInserted > 0 || data.nDeleted > 0) &&
             button.label == 'Recompile') {
           button.labelfont = fl.COURIER_BOLD_ITALIC;
  -        button.labeltype = fl.SHADOW_LABEL;
  -        button.labelcolor = fl.GREEN;
  +        button.labelcolor = fl.DARK_GREEN;
           button.label = 'Recompile!';
           button.redraw();
         }
  
positive.code: }
  
  void main() {
    int iter;
    float tempreal, tempimag, Creal, Cimag, r2;
  
    vec2 viewport = vec2(viewportHeight, viewportHeight);
  
negative.code:   Creal = real;
    Cimag = imag;
  
    for (iter = 0; iter < iterations; iter++) {
      // z = z^2 + c
      tempreal = real;
      tempimag = imag;
  