The rotpages package allows you to format documents where small sets of pages are rotated by 180 degrees and rearranged, so that they can be read by turning the printed copy upside-down. It was developed for collecting exercises and solutions: using the package, you can print the exercise text normally and the solutions rotated.
The author is Sergio Callegari.
License: lppl Version: 3.0 Catalogued: 2012-06-17