Improve doc.

    public PendingIntent deleteIntent;

    /**

     * An intent to launch instead of posting the notification to the status bar. Only for use with

     * extremely high-priority notifications demanding the user's attention, such as an incoming

     * An intent to launch instead of posting the notification to the status bar.

     * Only for use with extremely high-priority notifications demanding the user's

     * <strong>immediate</strong>attention, such as an incoming phone call or

     * alarm clock that the user has explicitly set to a particular time.

     * call (handled in the core Android Phone app with a full-screen Activity).

     * If this facility is used for something else, please give the user an option

     * to turn it off and use a normal notification, as this can be extremely

     * disruptive.

     */

    public PendingIntent fullScreenIntent;