Why prevent copying from the output pane? Often times I don't want to copy everything, just a portion of it, and execute that part of the code.

Is your feature request related to a problem? Please describe.
The online formatter doesn't allow copying portions of the code.

Describe the solution you'd like
It should be possible to select and copy portions of output, although editing shouldn't be allowed.

Describe alternatives you've considered
Copy-pasting into a text editor.

Additional context
N/A