A concordance program can be a handy tool for students to learn about the patterns of vocabulary, grammar, and style in work or the work of others. The concordancer allows you to search a text file for a "key word in context". In other words, the concordancer will display for you every instance of a search term in context . However, the search term does not need to be a word. The search term could be a phrase a part of a word (such as ing), a single letter, or even a mark of punctuation.