How did Harry close the witch?

[Steve]

No: HPFGUIDX 57667

--- In HPforGrownups at yahoogroups.com, SnapesSlytherin at a... wrote:
>
> ...edited...
> 
> My question is: how did the witch's hump close?  Harry puts his bag 
> in, and then Neville comes.  Does the door just shut itself after a 
> few minutes?  Or does someone have to shut it themselves?
> 
> ~*~*~Oryomai~*~*~

bboy_mn:

My impression was that it closed itself in a very short period of time.

Let's take another example - (to the best of my memory)

When you go into Dumbledore's office tower, you say the password, the
gargoyle jumps down off his stand, and a door opens to the moving
escalator-type stair case. But we never hear of anyone closing the
door or telling the gargoyle to get back into place.

So my guess is that they both work like the automatic doors you see in
muggle commercial buildings, as long as you stand poised to enter the
doorway, the door remains open and waiting. As soon as you step
through, it closes again. That is, the witch's hump closes, and in
Dumbledore's case, the door closes and the gargoyle takes his place again.

Notice that Harry stepped away from the witch as soon as he saw
Neville coming. We can assume that that was both to draw Neville's
attention away from the witch and to force the door/hump to close
automatically.

Just a thought.

bboy_mn