Manual correct, and complete. Downloads cleanly. Format of manual was presumably difficult to PDF to A4, but works reasonably well.
Text excerpt from page 15 (click to view)
Operating Instructions
Inserting the Shelf and Universal Baking Tray
3
Anti-tip device All slide-in units have a small bulge on the left and right. This bulge is an anti-tip device and must always point to the rear of the oven. Tray or universal baking tray: The anti-tip device must point towards the rear of the oven.
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Inserting shelf: Insert the shelf unit with both guide rails pointing upwards. The anti-tip device must point downwards and be positioned to the rear of the oven compartment.
Inserting shelf and tray: When the shelf unit and universal baking tray are used together, carefully place the shelf anti-tip device in the bulges on the tray.