Except in the limited ways allowed in Rules 8.1b, c and d, you must not take any of these actions if they improve the conditions affecting your stroke:
Move, bend or break any growing or attached natural object, or immovable obstruction, integral object or boundary object, or tee-marker for the teeing area when playing a ball from that teeing area.
Move a loose impediment or movable obstruction into position (such as to build a stance).