Window-(Apparition)

: Harry Potter: "Sir, are you... praying?"
: Albus Dumbledore: "No, Harry. I do not pray. I was merely closing a window -- the one that had allowed us to Apparate."
: — Dumbledore describing the "window"[src]
A window was a fixed point within a larger area that was rendered exempt from the effects of the Anti-Apparition Charm and/or the Anti-Disapparition Jinx covering it, and allowed people to Apparate and Disapparate on that spot only. The establishment or termination of this exemption was referred to as "opening" or "closing" a "window".
== History ==
: "As you may know, it is usually impossible to Apparate or Disapparate within Hogwarts. The Headmaster has lifted this enchantment, purely within the Great Hall, for one hour, so as to enable you to practise."
: — Wilkie Twycross describing the 'window' in the Great Hall.[src]
:
Some places in the magical world, such as wizarding schools and and the headquarters of wizarding governing bodies, were bewitched as to prevent people from coming and going by means of Apparition as a security measure. Hogwarts School of Witchcraft and Wizardry was one such place; although an exception was made once a year wherein the Headmaster or Headmistress of the day, whose job it was to maintain the magical security measures surrounding the school, would temporarily lift the effect of the relevant spells just in the Great Hall to allow an Apparition Instructor from the Department of Magical Transportation to teach students that was of age to Apparate.
From the 1989–1990 school year, Albus Dumbledore lifted the relevant spells at a fixed spot on the grounds near the Great Lake in order for a former student named Jacob to have easy access to his younger sibling, who was undergoing a race to find the final Cursed Vault before a nefarious cabal of Dark wizards known as R did. Because the group in question was still at large the following term and widely believed to plan on further targeting said students, the "window" had been left open for him during the 1990–1991 school year. It was presumably closed after said student graduated and it was no longer needed.
== Appearances ==
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== References ==