Any time you select a menu command that's followed by an ellipsis, Excel displays a dialog box. Think of a dialog box as a form that you need to complete and verify for Excel to continue. Figure 1.9 shows a dialog box and some of its standard elements.
Each dialog box contains one or more of the following elements:
Command buttons appear in every dialog box. OK, Cancel, and Apply are commonly used in dialog boxes.
List boxes provide two or more available choices. You select the item you want by clicking it.
Check boxes let you turn options on or off. ...