The document discusses NSF requirements for data management plans for grant proposals. It notes that as of January 2011, proposals must include a data management plan that addresses how data will be organized, preserved, and shared. The plan must provide enough detail for reviewers to understand how data will be managed during and after the project. Guidelines are provided on the key elements to address in a data management plan, including what data will be collected, how it will be formatted and documented, how others can access and use the data, and how the data will be preserved long-term. Resources for developing effective data management plans are suggested.