Ovid Web Gateway User Manual is provided by Fidae Information, which contains how to log in to Ovid, how to choose the search interface, how to select one or more databases to query, how to query by keywords, title matching, how to search more fields, how to query by author, how to query by article title, how to query by journal title, how to query by quick instructions, how to query words with different tails, how to query words with different letters in the middle, how to query English and American words, how to set and limit the order of words in keywords or phrases in the article, how to query specific keywords that appear multiple times in the document, how to merge search items and other content.