The BKS master page and the page layouts uses the following of the standard content placeholders to let you easily change the master page without getting errors:
- PlaceHolderTitleAreaSeparator (for the UserControlZone)
- PlaceHolderPageTitle
- PlaceHolderMain
- PlaceHolderLeftActions (for the right side)

The master page is made highly accessible and uses some special controls.

On the top we have the variation switch or language switch. The Create variation is hidden because we do not manage any content in there.

Second is a search where you can search for specific content.

Third are three Java script driven font size adjustment buttons. One to increase font size, one to decrease font size and one to reset the font to its default size.

Next we have a breadcrumb trail followed by top navigation and sub navigation. All three parts are made of the navigation control and only parameterized though a data source and an XSL.

The rest are text fields, BKSImage Controls and User Control Zone Controls, defined in the provided page layouts.