<Regions> element
The <Regions> element defines the Page Regions available for selection in the user interface when creating a Promotion.
Procedure
What to do next
When you add Page Regions to your Web pages, the id of the <tcdl:region> elements in your Dreamweaver Templates must match the values specified in the <Region> elements exactly (case-sensitive):
<tcdl:region id="Sidebar" type="SmartTarget">
</tcdl:region>