There seems to be a misunderstanding. I am not talking about the confirmatory emails you get, nor am I talking about online receipts. None of which I print out
I am talking about the last online screen on the suppliers website when you place your order, which says 'Thank you for your order, we will send you a confirmatory email'.
A quick click on print screen still seems a much easier and immediate solution for a confirmation that may only be needed for an hour or so than all the complicated cutting and saving to a word document etc.
France imposing a fine for no-shows at GP surgeries.