Copy and Paste Popup option (1 Viewer)

I have a form that I have users enter/select information on but I would like to add another feature where they can be provided a comment once they completed their data entry, to paste into an outside application. This comment might say "Ive added this to the Other database". Is there a way I can set up some sort of event to have a window pop up to provide text that can be copied for pasting elsewhere in this fashion?

You could do this in several ways e.g.
a) a new popup form
b) a message box
Either of these would contain the info you describe and could be triggered by code in the After Update event of a control

However, why can't users copy direct from the form if they want to do so?