Here, documentation and registration primarily means documentation of bio-diversity, key habitats, and other important biotopes in forests. This is a collection of standards for sustainable forest management, first established in 1998 and later revised in 2006, as a consensus between stakeholders in forest management and the forest industry, environmental and outdoor recreation organisations, trade unions and consumer interests - called the Living Forests Council. In the public hearing of the Regulation on sustainable forestry this linking to Living Forests was heavily criticized by e.g. several environmental and outdoor recreation NGOs, since it is a voluntary certification system.