Add "Note" object

I can add a "marker", which associates a title and descriptive text with a coordinate.

What I want is a coordinate-free version of the same.  This object would not appear in the map since it doesn't have a coordinate, but it would appear in the object list at left, and could be organized into a folder.  

Why is this helpful?  Because I could use it to create notes / instructions / containers for links to external references that apply to my map in general, or folder clusters, but not necessarily associated with a specific "place". 

The "Note" elaborates ideas/information - more about annotating the objects list itself, whereas the "Marker" elaborates a place - more the map itself.