Added comments for most of the methods I did. Thos not added ought to have self-explanatory titles.
Finished the passer method, aka determineUserInput() with a sub-method for every command except single commands like display.
Finished edit() method.

Fatal errors found and labeled.
Revert "Added comments for most of the methods I did. Thos not added ought to have self-explanatory titles."

This reverts commit 402417ea7a4991cdfabe6a248cba878f9dfea537.