The input panel is used to edit the name of the project.
The following video tutorial explains the Input panel usage in detail:
Using the Input panel on the Startup options dialog box
Main buttons on the Input panel
E - Applies changes then closes the input panel
F - Backspace
G - Cancels changes then closes the input panel
Other buttons on the Input panel
A - Capitalized characters
B - Numeric keypad
C - Special characters
D - Accented characters
