Scrollbars let the user select a value by sliding a "scoller" along a bar that represents a range of possible values. For example, if you wanted the user to enter a number from 1 to 100, you could use a scrollbar.

In many GUI frameworks, scrollbars are used to fit a large window into a small space by displaying only a small portion of the window and allowing the user to scroll which portion is visible. However, that is NOT the kind of scrollbar that FMSLogo lets you create; the scrollbars that you create with FMSLogo are often associated with a "slider" control.