How to scroll the mouse continuously
To scroll a page or document without using the scroll bar, get a mouse with a middle scroll wheel. A mouse with a scroll wheel lets you scroll up or down a page by moving the wheel up or down. The mouse may even support automatic scrolling, depending on the program used.
Laptop users with a touchpad can perform continuous scrolling by finding what two or three-finger gesture is used to perform a middle mouse button.
How to scroll continuously
To use auto-scrolling, click the scroll wheel by pushing on the wheel on a blank or empty portion of the screen. Once clicked, one of the three scrolling cursor icons (shown to the right) is shown, depending on the program. If the program does not display a cursor icon, it does not support continuous scrolling.
Move the mouse in the direction you want to scroll. The speed of the automatic scrolling can be adjusted based on the distance from the scrolling icon the mouse cursor is moved. The farther away you move the cursor, the faster the scrolling.
In the case of a spreadsheet, automatic scrolling can be very useful for reading a large document or scrolling through a large amount of data. Setting a slow scroll speed can allow for hands-free, effortless reading or data browsing.
Some programs have an auto-scroll feature that can be turned on and off using a keyboard shortcut. For example, in Adobe Acrobat, press the keyboard shortcut Ctrl+Shift+H to start auto-scrolling a PDF (Portable Document Format). In this example, pressing the up or down arrow keys increases and decreases the auto-scroll speed. To stop the auto-scroll before it hits the end of the document, press Ctrl+Shift+H again.
Some users have reported that this may not work for all PDFs. If you're pressing this keyboard shortcut and it's not working in Acrobat, right-click on an empty portion of the toolbar. In the context menu, move to Show Page Display Tools, and make sure Scrolling and Two Page Scrolling are enabled.