Drop-down list

When a drop-down list is inactive, it displays a single value.

When activated, it displays (drops down) a list of values, from which the user may select one.

This type of control is called a "pop-up menu" on the Macintosh platform;[2] however, the term "pop-up menu" is used to refer to context menus in other GUI systems.

Thus, the uses are different—pop-up menus are used to select a single option from a list while pull-down menus are used to issue commands or in cases where multiple options can be selected.

In web forms, the HTML elements and are used to display a drop-down menu:[3]