Public interest litigation has now broadened in scope to cover larger and larger groups of citizens who may be affected by government inaction. Examples of this trend include the conversion of all public transport in the city of Delhi from diesel engines to CNG engines on the basis of the orders of the Delhi High Court; the monitoring of forest use by the High Courts and the Supreme Court to ensure that there is no unjustified loss of forest cover; and the directions mandating the disclosure of assets of electoral candidates for the Houses of Parliament and State Assembly.