That's a very good question. I can't actually remember any particular inspiration for using 1995 as a start date, but it was probably just a random year to give it an "Authentic" look as if it had been some old shell system for the TAFE that had been in use for ages (ie much like how most software will have "copyright 1996-2014" to certify the date on which the copyright was filed and what the current year was. It was however, never meant to be an authentic piece of software or have any significant numbers, merely written as a brief demonstration that used a few simple commands to list file and directory structures. 2006 was the year that code would've been made though.