If you have a mouse with a scroll wheel, you can use the scroll wheel to scroll vertically or horizontally in any Pro Tools window that has a scroll bar (such as the MIDI Event List).To scroll a Pro Tools window vertically:1 Place the mouse over the window you want to scroll (for example, in the Edit window you might want to scroll either the track display or the Clip List).2 Scroll the scroll wheel up or down to scroll the window up or down.To scroll a Pro Tools window horizontally:1 Place the mouse over the window you want to scroll (for example, in the Edit window you might want to scroll either the track display or the Clip List).2 Shift-scroll the scroll wheel up or down to scroll the window to the left or right.