Initial settings on Tool Shelf


I wonder if its possible to re-invoke initial settings of newly created object (build-in or add-on) after deselecting it:
eg. I am creating a circle, specify its properties-no. of vertices etc etc. BUT…
after deselecting that circle (obviously higlighted upon creation) theres no way to have these initial settings back-
-for modification. Of course I mean unmodified object - just unselected. Any suggestions ?

If you want to change the initial settings delete it and re add it with the desired settings.
Add additional points and use something like the Loop Tools addon to re space the points

In other words: Its not possible to re-invoke above initial properties for the object. Thank you for the advise.