Extension Point : <Name>, E.g. IAuthenticator

Interface	The interface name. E.g. IAuthenticator
Module	The module from where the interface can be imported from. E.g. trac.web.api
Source	Provide a source link here. You might also include a line reference if you want. E.g. trac/trunk/web/api.py
Since	Since when is the extension point interface available? E.g. 0.12

Provide a short introductory explanation on the interface and the module providing it. E.g. the IAuthenticator extension point is defined by trac.web.api. It is used by trac's main request dispatcher to authenticate users based on the current request and session thereof.

Purpose

Provide detailed information on the purpose of the interface here. E.g. IAuthenticator is used by the main request dispatcher to associate the current request's session with a user, or, in case that no such user exists, with the anonymous user. The most basic implementation would search for a cookie in the request. Other, more elaborate implementations for example would provide single sign on by for example evaluating an existing request header, and so on.

Usage

Provide detailed usage information of the extension point and implementations thereof. E.g. when is a method of the implementation being called and so on.

Examples

Provide one or more example implementations of the interface.

Available Implementations

Provide references to available implementations of the interface, for example by linking to sources in trac trunk or on trac-hacks. You might also include short discussions on how they have been implemented.