Regulation (2005:9) on the use of a particular symbol (Keyhole).

This Regulation applies to the voluntary use of the Keyhole symbol on food products, when the product has a low content of of fat, sugar or sal, or a high content of fibre. The Regulation does not apply to products that has been legally labeled or placed on the market of another EU Member State. The use of the Keyhole on food products intended for children up to the age of 36 months is prohibited.
Annex 1 contains a list of group of food products and the nutritional conditions these must meet to bear the Keyhole symbol on their packaging.