This code adds an event listener to a button named...

This code adds an event listener to a button named "btn5_1". When the button is clicked, it calls a function named "fl_ClickToGoToAndStopAtFrame5_1" that has been bound to the current object using the "bind" method.

The "fl_ClickToGoToAndStopAtFrame5_1" function uses the "gotoAndStop" method to navigate to and stop at frame 49 of the current object's timeline. This code is typically used in Adobe Animate or other similar software to control the behavior of interactive elements such as buttons.