The source code

    /**
     * @ignore
     * gesture normalization for pc and touch.
     * @author yiminghe@gmail.com
     */
    KISSY.add('event/dom/base/gesture', function (S) {

        /**
         * gesture for event
         * @enum {String} KISSY.Event.Gesture
         */
        return {
            /**
             * start gesture
             */
            start: 'mousedown',
            /**
             * move gesture
             */
            move: 'mousemove',
            /**
             * end gesture
             */
            end: 'mouseup',
            /**
             * tap gesture
             */
            tap: 'click',
            /**
             * doubleTap gesture, it is not same with dblclick
             */
            doubleTap:'dblclick'
        };

    });