--- loncom/html/adm/help/tex/Domain_Configuration_Course_Defaults.tex	2022/02/22 18:05:02	1.11
+++ loncom/html/adm/help/tex/Domain_Configuration_Course_Defaults.tex	2022/02/22 18:11:11	1.12
@@ -55,7 +55,7 @@ courses (e.g., department and number).
 \item \textbf{Defaults that can be overridden in an individual course by a Domain
 Coordinator}
 
-Currently, there are five domain defaults of this type (which can be overridden
+Currently, there are six domain defaults of this type (which can be overridden
 via the ``View or modify a course or community'' interface). 
 
 \begin{itemize}
@@ -86,6 +86,10 @@ Note: student performance data are store
 tables are simply used to speed up display when a Course Coordinator uses the 
 Assessment Chart or Statistics functions in a course.
 
+\item Accept a username provided in LTI launch of deep-linked URL without re-authentication
+
+For deep-link access to a specific folder (or resource) in LON-CAPA, mediated by LTI launch from a different system, the signed payload included on launch can include the username of the authenticated user who followed a link in another system.  Whether such a username will be accepted, and a session launched for that username in LON-CAPA, or whether the user will be prompted to log-in to LON-CAPA in order to access the deep-linked resource(s) depends on the ``Use identity'' setting in effect for the current course.  If the domain default is set to ``No'', then a Course Coordinator will not be given the option to set ``Use identity'' when configuring Link Protector(s) in a course, and all users will need to log-in to LON-CAPA to complete the launch process.
+
 \end{itemize}
 
 \end{itemize}