As someone who has been using the FREE and EXCELLENT services offered by Agoracom for a few months, I would suggest to you that you take the time to learn how to use basic editting features, which generally work throughout all Windows programs and Internet browsers.

Copy - ctrl+c

Paste - ctrl+v

Cut - ctrl+x

Undo - ctrl+z

Redo - ctrl+y

If you are using Mac, replace the 'ctrl' key above with 'cmd' key.

If you are using Linux, you will need to find the commands particular to your flavour. Try the following link: copy and paste keyboard shortcuts linux 

On one last note: If you find that the excellent services offered here are not to your standards, perhaps you should revisit your reason for coming to this website instead of the ones you listed as being superior...