What are the functions of the high and low limit screws on a front derailleur and how do they help in adjusting the shifting range of the derailleur?

The high and low limit screws on a front derailleur control the outer limits of the derailleur's movement. The high limit screw sets the maximum outward movement of the derailleur, while the low limit screw sets the maximum inward movement. By adjusting these screws, you can fine-tune the shifting range of the derailleur, ensuring smooth and precise gear changes.