Other than creating and designing master pages, there are two primary aspects to working with master pages in SharePoint Designer:
• Accessing the site collection and subsite Master Page Gallery
• Changing the current site collection or subsite master page
Using SharePoint Designer, you are able to access the Master Page Gallery. However, as pointed out earlier in this chapter, in SharePoint Designer you are able to access and save master pages directly to the Master Page Gallery in publishing subsites, whereas doing the same in the Web interface redirects you to the Master Page Gallery in the root site of the site collection and forces you to save master pages to that location. This is an obvious consideration ...