PUBLIC MARKS from fredbird with tags pattern & user-interface

Each of these patterns (which are more general) and techniques (more specific) are intended to help you solve design problems. They're common problems, and there's no point in reinventing the wheel every time you need, say, a sortable table -- plenty of folks have already done it, and learned how to do it well. Some of that knowledge is written up here, in an easily-digestible format.