http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52017XC0705(01)&from=EN
"The aim of these guidelines is to help companies disclose high quality, relevant, useful, consistent and more comparable non-financial (environmental, social and governance-related) information in a way that fosters resilient and sustainable growth and employment, and provides transparency to stakeholders. These non-binding guidelines are proposed within the remit of the reporting requirements provided for under the Directive. They are intended to help companies draw up relevant, useful co