Rule 14j is clear for Divisions 1 to 3 but I do understand the wording for matches below Division 3 could cause some confusion….. Basically the blue/white 17 inch markings are a guideline for non panel umpires (usually players) in matches below Division 3 to determine whether a leg or off side wide should be given. It is NOT to determine a leg side wide as is the rule for Divisions 1 to 3.  Thus in matches below Division 3, any ball whether legside or offside to any batsman should only be called a wide if it passes outside of the blue/white markings when it passes the popping crease..