https://code.activestate.com/recipes/579048-python-mandelbrot-fractal-with-tkinter/ https://stackoverflow.com/questions/9886274/how-can-i-convert-canvas-content-to-an-image https://tkdocs.com/tutorial/text.html https://stackoverflow.com/questions/33084097/tkinter-really-all-complete-event-list https://stackoverflow.com/questions/4172659/master-list-of-all-tkinter-events https://www.tcl.tk/man/tcl8.5/TkCmd/bind.htm#M7