This reminds me of a trick you could do on the Commodore PET in the 1980s, where you'd embed backspaces in your BASIC code. If someone looked at the code they'd

This reminds me of a trick you could do on the Commodore PET in the 1980s, where you'd embed backspaces in your BASIC code. If someone looked at the code they'd see something different from what gets executed. Effective to keep someone from copying your code in class :-)