sidebar showing a "mini-map" of a buffer

 This package is an implementation of a minimap sidebar, i.e., a
 smaller display of the current buffer on the left side. It
 highlights the currently shown region and updates its position
 automatically. You can navigate in the minibar by dragging the
 active region with the mouse, which will scroll the corresponding
 edit buffer. Additionally, you can overlay information from the tags
 gathered by CEDET's semantic analyzer.