Editor + ShowBlockNodes Plugin
This is an example editor with ShowBlockNodes enabled.
The ShowBlockNodes plugin is a visual 'helper' plugin. When toggled on, it will show you in the editor window where all
the block nodes are ant their contents. This can be vauluable in checking the layout, as content may be nested under nodes
you didn't expect.
Note: The ShowBlockNodes is hotkey enabled to CTRL-SHIFT-F9 as well as being button driven.