The document discusses the key elements and requirements for complying with the NIH Public Access Policy, which requires investigators funded by NIH to submit final peer-reviewed manuscripts to PubMed Central upon acceptance for publication. The three main elements are: 1) retaining author rights to submit to PMC, 2) submitting the manuscript to PMC or NIH's manuscript submission system, and 3) providing proof of compliance on grant applications. The PI is ultimately responsible for approving manuscript submissions, though an author other than the PI may submit.