!!! Overview
The [{$pagename}] is an [OAuth 2.0] [Grant Type] where [Authorization Server] which support this grant will also issue a [Refresh Token] when it returns an [Access Token] to a [OAuth Client]. 

When the [Access Token] expires instead of sending the user back through the [Authorization Code Grant] the [OAuth Client] can use to the [Refresh Token] to retrieve a new [Access Token] with the same permissions as the old one.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]