This package allows the typesetting of manuscripts with notes, figures, citations, captions and tables in the margin, which is common e.g. in science textbooks or theses. A reference implementation, i.e. the caesar_book class as well as its documentation are included. This material is subject to the LaTeX Project Public License. See http://latex-project.org/lppl/lppl-1-3c.html for the details of that license.