A bit of confusion (was: Slambooks at Hogwarts)

[Kaitlin]

No: HPFGUIDX 790

>>I'm trying to picture what magical properties it might have.  A
>>Truth Pen (forget the tact!) for example.

It would probably be called an "Anti-Lying Quill," knowing how JKR 
names things. :)
Which leads me to the following question:  Why do the people at 
Hogwarts use quills, ink and parchment if they are in the twentieth 
century?  Just curious.

~Kaitlin