The document discusses the Protocol of San Salvador (PSS), an additional protocol to the American Convention on Human Rights that establishes mechanisms for measuring progress on economic, social, and cultural rights in Latin America and the Caribbean. States parties submit national reports to the PSS following-up mechanism using a set of approved progress indicators across two groups of rights. The indicators are intended to help states evaluate fulfillment of social rights, identify issues, and develop strategies for progressive realization of rights in a participatory process beyond just reporting. They include quantitative and qualitative measures across structural, process, and outcome areas relating to rights incorporation, budgetary commitment, and state capabilities.