Editing : Making Selections : Timeline Selections : Scrolling with a Scroll Wheel

Scrolling with a Scroll Wheel
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.