Try our re-instated info resource - "Aladdin's Cave" (Main menu)- sorry it's taken so long to fix
They are generally for wheel alignment but I am yet to come across a bike, new or old, where these seem to mean anything in relation to wheel alignment.
ok another query, I can see marks faintly on the swingarm perhaps 6 lines verticalI take it you align marks with chain adjuster and swingarm furthest into the swingarm and then fit chain and pull back wheel to take up slack for length of chain?