Carb Intake Rubber Boot Markings question

[Kettle One]

The rubber manifold boots that join the carbs to the cylinder head are marked "R" on one side and "L" on the other. Can anyone explain what this means as they look identical to me whichever way around they are. Thanks!

[snydes]

Usually the carb boots should have some small little ridges that sit down onto a certain spot so they cannot spin. depending on which side they are on should reflect the what way they sit. R and L mean right and left side which so you should have 2 R sides facing out and 2 L sides facing out