Documenting research data makes it easier to retrieve, search, understand, contextualize, and apply research data. The use of structured metadata helps to improve the findability of research data, while extra information describing the context of the data collection, research methods, and the data itself promote a better understanding and reuse of the data. For this reason, data stored in the Refubium, Freie Universität Berlin’s institutional repository, is accompanied by a description of the research data (as a text file).