Projector Mode is a great feature that creates a bolder view of your graph. Functions, points, axes, labels, and gridlines will all appear larger for easy projection. Turn this feature on to allow students in the back of the classroom see what you're graphing on the projector more fully.
Graphs are not in projector mode by default. To turn projector mode on, open the Graph Settings menu by clicking the wrench in the upper right hand corner. You can toggle projector mode on and off with the Projector Mode button.
Pro-tip: Using projector mode when saving a graph image or printing the graph will make the images/printouts bigger and bolder!