Comment 141 for bug 582809

The tap+drag also works in nautilus. Of course, for standard tap+drag, you don't need to hold Alt. Alt is just the modifier in for moving a window by dragging the mouse.

Some of the issues may be the result of the new click pad functions not being well documented yet.

With Natty on an HP Envy, the following work:

One-finger tap => left click
Two-finger tap => right click (context menu)
Three-finger tap=> Middle click (e.g. insert text)
Two-finger drag => scroll up / down (or left/right) (enable via mouse settings)
Tap + drag => click and drag (i.e. drag and drop)
-- Works for e.g. moving windows when when also holding Alt
Alt + three-finger tap + drag => resize windows (equivalent of Alt+middle drag on a 3-button mouse)
(It's actually sufficient to initiate the tap with three fingers and do the dragging with just one finger.)