Is there any tool that allow to erase just a part of an annotation?

For example, I am using the freehand tool annotation and I do a lot of writing in my script, after a bunch of time rewriting things and doing a bunch of changes I mess up with just one word I did a few minutes back, so I cannot undo, is there any tool that allow me to erase just one thing I wrote within the handwrite annotation?
Attached an example

Dear User,

In our demo project it's not possible to erase a specific word in an annotation because the annotation is saved as a single entity if you draw and then save it at the end.
You'll need to edit the ink tool annotation function: each time the user ends tapping on the screen you save the annotation so those annotation aren't merged.

regards,
RadaeePDF.com
Support Team