By default, synchronized scrolling is enabled when the file view is split.

 

For example, if the file is split horizontally, you can use either of the horizontal scrollbars to scroll both views simultaneously (the vertical scrollbars work independently of each other). Similarly, if the file is split vertically, either of the vertical scrollbars can be used to scroll both views vertically.

 

You can disable synchronized scrolling by pressing the Split Screen button on the toolbar and selecting Split Options. This allows you to modify the following options:

 

Disable Horizontal Synchronized Scrolling (in Horizontal Split Mode)

This disables horizontal synchronized scrolling when the file view is split horizontally. When enabled, the horizontal scrollbars will work independently of each other. Note that vertical scrolling is never synchronized when the file view is split horizontally.

 

Disable Vertical Synchronized Scrolling (in Vertical Split Mode)

This disables vertical synchronized scrolling when the file view is split vertically. When enabled, the vertical  scrollbars will work independently of each other. Note that horizontal scrolling is never synchronized when the file view is split vertically.