Closing a Dialog Box for User Selection
Design Guidelines
Handling Keyboard Input
Provide reasonable defaults for all entries and options. Well-chosen defaults can help users complete a dialog box quickly and easily.
It is recommended that you update the default values—in other words, that you save the user's previous settings and use them as the new defaults—each time the dialog box is used. Even if the user has to change some of these, it is less work than starting from the beginning each time.