The passage of a door; entrance way into a house or a room.

the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; "he stuck his head in the doorway"

a place, distinct from the room or hall on either side

Means of instantaneous Travelling using the One Power. A slightly slower process called skimming allows travel when the end point is not sufficiently clearly known.

an independent web page created for the purpose of redirecting traffic to another site

a page that uses keyword density to score high in a given search and has exactly one Link that points to your main page

a page with stuffed keywords without any meaning for a human reader, but valued by certain search engines

an obstacle that impedes progress when it is closed

a high leverage technique that we teach in our course

a crossing between two worlds