DOCLINE: System Requirements

The minimum system requirements for DOCLINE are:


- FTP (File Transfer Protocol) enabled with the ability to view hidden sub-directories turned on (only if access to Serial Holdings reports is needed).

- "Passive Transfer" feature of FTP enabled (only if access to Serial Holdings reports is needed).




When you visit any Web site, it may place a small text file, known as a "cookie" on your computer. The cookie allows the Web site to "remember" specific information about your visit while you are connected or when you return to that site. The Office of Management and Budget Memo M-10-22, Guidance for Online Use of Web Measurement and Customization Technologies, (PDF*, 1.03MB), 6/25/10, allows Federal agencies to use session and persistent cookies, defined below.


The cookie makes it easier for you to use the dynamic features of Web pages. Cookies from NLM Web pages only collect information about your browser's visit to the site; they do not collect personal information about you. While visiting certain NLM sites, you may occasionally encounter a Web page that automatically employs cookies to make it easier to use the dynamic features of these Web pages.


NLM Web sites may use either single session (temporary) or multi-session (persistent) cookies. Session cookies last only as long as your Web browser is open. Once you close your browser, the cookie disappears. Persistent cookies are stored on your computer for longer periods.


Session Cookies: We use session cookies for technical purposes such as to enable better navigation through our site. The OMB Memo 10-22 Guidance defines our use of session cookies as "Usage Tier 1 -- Single Session." This tier encompasses any use of single session Web measurement and customization technologies.


Persistent Cookies: NLM uses persistent cookies to enhance the Web experience for our users. Persistent cookies remain on your computer between visits to NLM until they expire. The OMB Memo 10-22 Guidance defines our use of persistent cookies as "Usage Tier 2 -- Multi-session without Personally Identifiable Information" (PII.) This tier encompasses any use of multi-session Web measurement and customization technologies when no PII is collected.


For example, DOCLINE uses persistent cookies to identify the institution performing various system functions (borrow, lending, updating holdings, etc.).  As the user moves from page to page in DOCLINE, cookies allow his/her own specific institution record, serial holdings, and transaction records to be retrieved.


Further information about cookies can be found at



At this time, NLM does not support the Macintosh (Mac) platform for DOCLINE. Unlike other NLM systems, DOCLINE is not a public system; it is closed to all but DOCLINE users. Given the range of variations in environments introduced by the Mac, NLM cannot currently give adequate time and attention to critical testing and support required to ensure proper system performance.


If you have a Mac and have used DOCLINE successfully, there is no reason why you cannot continue to do so. However we do not recommend the purchase of Macs specifically for use with DOCLINE, nor can we provide the technical support for existing Macs in the network.