Marauder's Map

[milz]

No: HPFGUIDX 4592

--- In HPforGrownups at egroups.com, faerysneezes at y... wrote:
> 
> > So, how come the map recognizes Snape and insults him? Because
> > the four Marauders set it up to do that in case their schoolmate
> > Snape ever tried to use the map.
> > 
> > Susan
> 
> 
> And considering that the first time Snape encounters the map he was 
> prodding at it with his wand, that might be why it insulted him. And 
> didn't he say his name at it too? Whereas when he passes by Lupin's 
> desk and finds the map there, he sees whats going on around the 
> whomping willow and he only give a glance at the map. He does not 
try 
> and stick his extremely large nose into other peoples business--the 
> slimeball!-- (gosh i love that map!) and therefore maybe the map 
> didn't produce any insults a second time...
> 
> norevoli

Snape commanded the Map to reveal its secret..."I Professor Snape, 
master at Hogwarts, command you..." (or something similiar).

I think the Map works on the same principal as the Moody's Foe Glass. 
The people who are of concern to the viewer are the ones who show up 
on the map. Recall, the Twins told Harry the secret phrase to use the 
map and the secret phrase to erase the map. 

Maybe Lupin was using the Map to how and when Sirius was entering 
Hogwarts, when he spotted Harry, Ron and Hermione.

:-) Milz