This template is the optional page layout for archived entries.  If the archive layout is enabled for a blog, then this template will be used instead of basic_layout_tpl.php when the entry permalink is displayed.

The main difference between this and the basic layout is that the sidebar is omitted and the body class is different.  Aside from that, all the same rules and ideas discussed in the basic_layout_tpl.php documentation apply.

This template is the default page layout.