Completely restart an assignment?

Final assignment: I accidentally deleted some code from one of the cells and have no idea what should go there. I have made it 99% of the way with cutting and pasting. I just want to restart the assignment in its original state. Rebooting does not work.

  • Use the File menu and rename your notebook file.
  • Use the Help menu and “Get latest version”. This will give you a new copy of the notebook.
  • Use the Kernel menu and Restart the kernel.
  • Use the File menu and open the new copy of the notebook.