These Regulations implement EC legislation laying down detailed rules for the application of the Agri-environment Regulation, in particular Article 11(3)(b) (which concerns the extension, during the currency of an undertaking, of the area subject to that undertaking), Article 13 (which provides for transfers from one undertaking to another in certain circumstances) and Article 20 (which provides for recovery of wrongful payments with interest, a penalty system and exclusion for false declaration