The Human Development Report Office (HDRO) works to publish the Human Development Report (HDR), an independent report commissioned by the United Nations Development Programme (UNDP). The mission of the Human Development Report Office (HDRO) is to advance human development. The goal is to contribute towards the expansion of opportunities, choice and freedom. The office works towards this goal by promoting innovative new ideas, advocating practical policy changes, and constructively challenging policies and approaches that constrain human development. The office works with others to achieve change through writing and research, data analysis and presentation, support to national and regional analysis and outreach and advocacy work. The HDRO also works on the Human Development Index (HDI), which is a summary measure of average achievement in key dimensions of human development: a long and healthy life, being knowledgeable and have a decent standard of living.