Sorry that didn't work.
I clicked: File > Preferences > Editor (tab) and ticked "Edict Label on Create Note". But when click on a shape to get the 8 little black squares surrounding it and then start typing... nothing happens. Whereas I was hoping the text would go into the shapes. On the up side I see that at the time of creation (e.g. dragging a shape on to the drawing), it does at least leave you in reading to enter text mode (i.e. as if you had pressed F2). This is a major improvement and judging by other tools I've just looked at I would strongly argue that should be the DEFAULT setting too, if you want new users to love your product.
Either way it's still not quite doing what I originally meant.
Trying to help