After you convert the design of template into HTML code, make sure that it meets the Sitebuilder requirements. Then you should transfer it to the Sitebuilder format. In this format the design of pages is, as usual, described with HTML, but using special tags with the SiteBuilder namespace. For example:
<SiteBuilder:Container ID="TopMenu" />
These tags define abstract controls which are responsible for generating dynamic content on sites. For instance, the tag in the above example is responsible for displaying the top-level menu.
These abstract controls are declarative controls, which only define the appearance of web site pages. Control's behavior depends on its type and its ID attribute. For the complete list of the abstract controls, refer to the Appendix Controls Reference. An example of how to use such controls is given in the Creating Master.page File section.