Описание тега listbox
A graphical user interface element that allows the user to select one or more items from a list.
A list box is a graphical user interface control that allows the user to select one or more items from a list contained within a static, typically multi-line container.
Items are typically selected on click/touch, in a desktop environment depressing either shift or control keys during item selection can allow the selection (or de-selection) of multiple items.
The key feature differentiating a list box from other input controls is the selection of multiple pre-defined items.