For information on several programs which facilitate document delivery and are supported by the National Network of Libraries of Medicine, check out NN/LM's Document Delivery Service Information page at the following URL:
http://www.nnlm.nlm.nih.gov/nnlm/docdel
Here you will find information on DOCLINE, DOCUSER, SERHOLD, and Loansome Doc as well as a link to the QuickDOC File Archive. Various NLM Fact Sheets and other NLM materials are available at this site as well. In particular, you can access the recently updated (March 1997) Online SERHOLD Procedures Manual by clicking on "Serials Programs and Services" from this page.