Feature Req: Select All to clipboard

[knox-dawson]

I saw this in discord: "Hey team, would it be possible to add a "file to clipboard text" option (e.g. I put some text to a file and it goes to the clipboard). If possible, could it be ported to 3.8? I'd love to be able to use it on my toltec install"

Related to this (I think), I would like to "Select All" and put an entire notebook page into the clipboard.

[mb1986]

I think it should be possible. Not so sure on porting back to 3.8 though.