On June 23, 2009, the U.S. National Library of Medicine® (NLM®) released DOCLINE 4.0. DOCLINE is the NLM automated interlibrary loan requesting system. The system provides nearly 3,000 health science libraries in the National Network of Libraries of Medicine® (NN/LM®), Canada, Mexico, and other selected international libraries, with the means to request the interlibrary loan of biomedical literature.\n\nThe new version contains a key enhancement of the Serial Holdings module requested by users. It also introduces simplified serials title searching, modified screen designs to improve the display and editing of serial holdings records, search filtering by acquisition status, and a new function called Show All My Holdings which allows authorized users to display a list of all of their library's holdings for efficient review and update.\n\n