STN User Guides provide detailed descriptions of specific STN features or functions. Examples are used throughout the guides to show you the exact STN interaction. All STN User Guides below are in PDF format and listed in alphabetical order.

• Derwent Drug File (DDF) (DDFU/DRUGU) Thesaurus (04) - comprehensive user guide for DDF controlled term (/CT) searching
• Derwent GENESEQ User Guide (an Introduction) (09/00)
• Derwent World Patents Index - STN online user guide (05/06)
• DGENE Workshop Manual (07/11) - comprehensive user guide for DGENE content and searching
• DPCI Reference Manual (01/11) - complete user guide for the Derwent Patents Citation Index (DPCI)
• DWPI Chemistry Resource (DCR) Reference Manual (06/07) - complete user guide for chemical substance searching in Derwent World Patents Index (DWPI)
• INPADOCDB/INPAFAMDB Handbook (02/10) - combined user guide for INPADOCDB and INPAFAMDB content and searching
• MARPAT User Guide (~207K) (03/97)
• MEDLINE Searching MeSH User Aid (this document is being updated)
• NAPRALERT Classification Codes (~298K) (06/93)
• STN Express with Discover! User Guide - Analysis Edition, see STN Express main page
• Patent Coverage in Chemical Abstracts - country, kind, and timeframe coverage of patents
• Patent Information from CAS (~240K) (12/02)
  emphasizes the selection, coverage and content of patent documents in the CAS database from 1907 to the present
• Polymer Class Terms in the Registry File (~65K) (01/93)
• STNindex User Guide (~91K) (03/96)
• USGENE Workshop Manual  (10/12) - comprehensive user guide for USGENE content and searching