Likewise, a button containing an ellipsis will open a dialog box. A check mark appears to the right of some commands after you select them. This indicates the command is in effect. Simply type the key combination to perform the command. A triangle to the right of a command indicates a cascading menu will appear when you move your pointer over the command.
List boxes display a list of choices.
A drop-down list box appears as a rectangular box displaying the current selection. Selecting the down arrow at the right of the box displays a list of available choices. You type information into a text box. Some text boxes are named after the dialog box they appear within.