with that event and DATA.
If THRESHOLD is non-nil, enforce a threshold of movement that is
-either itself or 10 pixels when it is not a number. If the touch
-point moves beyond that threshold EVENT on any axis, return nil
-immediately, and further resume mouse event translation for the
-touch point at hand.
+either itself or 10 pixels when it is not a number. If the
+aformentioned touch point moves beyond that threshold on any
+axis, return nil immediately, and further resume mouse event
+translation for the touch point at hand.
Return nil immediately if any other kind of event is received;
otherwise, return t once the `touchscreen-end' event arrives."