--- loncom/html/adm/help/tex/Course_Prefs_Linkprotection.tex	2022/02/16 04:04:39	1.2
+++ loncom/html/adm/help/tex/Course_Prefs_Linkprotection.tex	2022/02/22 19:38:42	1.3
@@ -46,7 +46,7 @@ If the domain has been configured to all
 \item Action if username does not match enrolled student
 \end{itemize}
 
-Deciding what to select as the source of the username requires knowing what the other learning system sends in the LTI Request.  Ideally, the other system will provide a preview feature for instructors to use to display items included in a launch request, and values set for them (for the previewer). In LON-CAPA, selecting ``User ID'' for the username source indicates the username will be whatever was assigned to the ``lis_person_sourcedid'' parameter, whereas selecting ``Email address'' means the username will be whatever was assigned to the ``lis_person_contact_email_primary'' parameter by the launch system.  If neither of those are appropriate then ``Other'' can be selected, and the appropriate parameter name in the LTI Request can be entered in the textbox.
+Deciding what to select as the source of the username requires knowing what the other learning system sends in the LTI Request.  Ideally, the other system will provide a preview feature for instructors to use to display items included in a launch request, and values set for them (for the previewer). In LON-CAPA, selecting ``User ID'' for the username source indicates the username will be whatever was assigned to the ``lis\_person\_sourcedid'' parameter, whereas selecting ``Email address'' means the username will be whatever was assigned to the ``lis\_person\_contact\_email\_primary'' parameter by the launch system.  If neither of those are appropriate then ``Other'' can be selected, and the appropriate parameter name in the LTI Request can be entered in the textbox.
 
 A username will only be accepted from the launch data for session creation in LON-CAPA if the corresponding user has already been assigned a student role, and no privileged role(s) in the target course in LON-CAPA.  What will happen if that condition is not met can either be to stop the launch, or to display the LON-CAPA login page, and allow a user to authenticate.  The second of those is the same behavior as seen if ``No'' had originally been selected for ``Use identity?'.