Now that you’ve had a chance to see how to work with and create SharePoint 2010 master pages in SharePoint Designer, let’s review further SharePoint master page components which help you as you move through the remainder of this chapter.
Figure 17.41 shows several highlighted sections of the v4.master page, shown in code view in SharePoint Designer, specifically
• A master page directive at the very top of the master page, which instructs SharePoint that it is a master page—
• Tagprefix registrations, which include references to various assemblies and DLLs related to functionality throughout SharePoint sites, such as navigation and publishing functionality. The
@Register prefix ...