4n INTERFERENCE AND MARKING A TABLE.
There is NO penalty if balls are moved in these circumstances...
(a) By persons other than the players taking part in the frame OR
(b) As a result of players being bumped OR
(c) Events deemed not within a player’s control.
The referee will return balls as closely as possible to their original positions.
A player may not use chalk or other object as a marker.
It is not a foul to place chalk on the table while in control but it should be removed before an opponent addresses the table.
Intentional marking, such as positioning chalk to aid a shot, is a foul.
