A question regarding cut and paste.

[Robin Singh]

Hello All,
I am a naïve email user. In other windows editors, I can
1. Select text(t1) from somewhere and copy it .
2. Go somewhere else and  and select some other text(t2) and paste t1. So t2 
will be replaced by t1.

How do we do this in emacs ? Does anyone have macro to do this ? I know 
there’s search replace command but I don’t want to use that.

Thanks in advance,
Robin

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