How do I Copy someone's previous post in my reply??

When I am replying to someone's post, how do I copy their post in my reply??

Thanks,

 

On the bottom right corner of the post, use the "Quote" option and your reply will appear like this

 

shyhh,

thanks for the quick response!

 

If you want to only quote part of a reply, you can highlight the parts you don't want and delete them.