The arrow shows the direction of rotation of the ignition distributor.

For normal engine rotation, the working mixture in the cylinders is not ignited in the usual order 1-2-3-4. The high-voltage wires are inserted into the ignition distributor according to the ignition order. To avoid confusion, new high-voltage wires are supplied with numbers. The ignition order for all types of engines is the same: 1-3-4-2.
The text is available on this website [RenaultBook.ru]
