Copy text on document 2

Hi all,

I have 2 documents. In document 2, having the text selection. I need to copy the selection text in document 2. So, Open the document 2 file,

and then copy and again opening document 1 for paste text.

Because, more entries need to copy and paste on document. It takes more time.

So, any code available for without opening the document for copy text.

Thanks.