definition of the 102: General Disclosures 2016) and of the 26 material topics amongst the Specific Standards (Series GRI 200: Economic, GRI 300: Environmental, and GRI 400: Social) and relative indicators, with indication of the sections and pages of the document, where it is possible to consult them, or responses to indicators, and reporting of any omissions or inapplicability of certain indicators included in material topics.