This is an endnotes package for LaTeX. Its user interface provides means to print multiple sections of notes along the document, and to subdivide them either automatically --- by chapter, by section --- or at manually specified places, thus being able to easily handle both numbered and unnumbered headings. The package also provides infrastructure for setting up contextual running headers for printed notes. The default is a simple but useful one, in the form Notes to pages N-M, but more elaborate ones can be built. When hyperref is loaded, postnotes provides hyperlinked notes, including back links.