Debug printing

I'm debugging a new formula. All the printing so far is in the constructor. I get many more lines of printing than I expected, some of the same things over and over.

I thought that the constructor was only invoked once.

When is it really invoked? How can I avoid the excess printing?

This happens if multiple threads are calculating the fractal. Each thread will print a message. To prevent this, set the min/max number of threads to 1 (temporarily) in the Fractal tab of the Preferences dialog.

Of course. I forgot all about multiple cores and threads. Thank you.