Final answer:
The scroll wheel on a mouse is used to move the cursor up and down in documents or pages with ease.
Explanation:
Mouse Functions
The function on a mouse device used to move the cursor up and down in documents or move a page or screen up or down is the Scroll wheel. The scroll wheel allows for easy navigation through content without having to click and drag.
Left button (left-click) is used for selecting items, while Right button (right-click) typically opens context menus or performs secondary actions.
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