Which Observer/interface handles Cut/Copy operations of text frame?

Hello,

When we cut a text frame and then paste it, a new uid is assigned to the pasted frame.

Now, I want to know the new uid assigned to the frame each time it is cut/paste.

I tried to search for working of cut/copy/paste operations, but I could only find its implementation at text level (for ex. IScrapSuit uses clipboard to modify text).

It will be really helpful if I find the observer or interface that is used to carry out the operations of cut/copy/paste the text frame.

Hoping for a reply.

Thanks.

Regards,

Yogesh Walke