+@warning{This layout can be achieved very easily using the built-in
+template: @code{satb.ly}, see @ref{Built-in templates}. But for ease
+of use this template deliberately hides the necessary context
+structure, instead providing it automatically. So for purposes of
+learning let us see how to build this up from scratch. You may need
+to do this if the built-in template does not meet your needs
+adequately.}
+
+The nearest copy-and-edit template to this layout is