N1ED allows inserting and editing various components of the content - widgets. Examples of simple widgets are images, YouTube video and so on. Widgets can also be nested: inside the Image Gallery widget there are Gallery Image Preview widgets.
This system replaces raw HTML tag editing in CKEditor. Working with content becomes more semantical and closer to the subject of the content, leaving aside details of its technical implementation. Now, a content manager doesn't need to know HTML. Everything, from images or links to tables or its cell, is a widget. Select a widget and configure it in the left sidebar.
Note the new Breadcrumbs (replacing the older plugin
elementspath in CKEditor) - it displays widget hierarchy. This allows you to select parent widgets of the selected widget.
The list only contains widgets you can insert manually. Outside of the list are widgets that are dynamically created inside other widgets (for instance, a cell of a table) or automatically created upon certain events (i.e. paragraph or while the text is edited directly).