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12 .\" 3. Neither the name of the author nor the names of any co-contributors
13 .\"    may be used to endorse or promote products derived from this software
16 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
25 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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56 The driver simulates a three\-button mouse using multi\-finger tap detection.
57 Single finger tap generates a left\-button click; two\-finger tap maps to the
58 middle button; whereas a three\-finger tap gets treated as a right button
61 There is support for 2\-finger horizontal scrolling, which translates to
62 page\-back/forward events; vertical multi\-finger scrolling emulates the mouse
65 A double\-tap followed by a drag is treated as a selection gesture; a
66 virtual left\-button click is assumed for the lifespan of the drag.
73 Pointer sensitivity can be controlled using the sysctl tunable
79 A simple high-pass filter is used to reduce contributions
80 from small movements; the threshold for this filter may be controlled by
83 The maximum tolerable duration of a touch gesture is controlled by
90 The maximum time (in microseconds) to allow an association between a double-
91 tap and drag gesture may be controlled by
103 .Bl -bullet -compact
119 Almost all recent Macbook-Pros and Airs (IDs: 0x0223, 0x0223, 0x0224, 0x0224,
128 To discover the product\-id of a touchpad, search for 'Trackpad' in the
135 creates a blocking pseudo\-device file,
141 type device\-\-see
153 .An -nosplit