This page provides a drag-and-drop interface for assigning a block to a region, and for controlling the order of blocks within regions. Since not all themes implement the same regions, or display regions in the same way, blocks are positioned on a per-theme basis. Remember that your changes will not be saved until you click the Save blocks button at the bottom of the page. Click the configure link next to each block to configure its specific title and visibility settings.

Demonstrate block regions (Bartik)