This document provides a guide to using emacs-wiki, a hypertext markup system for GNU Emacs and Xemacs. It describes how to install emacs-wiki, either by downloading a release or the development version from source. It then covers basic wiki concepts and markup rules for formatting text, including headings, horizontal rules, emphasis, footnotes, paragraphs, poetry, code blocks, and tables. The document also includes a keystroke summary and chapters on more advanced features such as publishing wiki pages as HTML, renaming links, searching wiki pages, and using multiple projects.