Type a block of text, eg Here is some sample text, and then copy it.
Hit return a few times to provide a gap.
Now select Edit, then Paste special... and then select Paste link radio button.
Select OK to finish.
It will look like you've pasted as normal. However if you go back to your original block of text and edit it, as soon as you click out of the block of text it will update the second 'copied' block automatically.
Hope this helps...