The IMF runs a metadata query service which gives quick access to metadata for any combination of countries, data categories, and metadata elements (data coverage, periodicity, timeliness, etc.). It can be linked to different levels, from less detailed to more detailed metadata. It covers countries committed to the IMF's more rigorous Special Data Dissemination Standard (protocol for the production and publication of statistics) and many social, economic and demographic data sets. It can give on-screen comparisons between countries of metadata for specified data headings.