I found the Rad Editor track changes feature as useful control in telerik. As many software or finance companies have their operations going on, on each stage they would require to change their BRD, UD, Product Documents etc. to keep track of the change the editor is useful.
I would like to add some points for improvement, that we have costumized in our portal.
1) Listing of all the changes in left side of the editor (Added/ Deleted/ Replaced).
2) Can track text replacement also.