--- shibboleth-identity-provider-3.4.6/system/messages/messages.properties	2019-10-02 09:53:00.000000000 +0900
+++ shibboleth-identity-provider-4.0.0-beta1/system/messages/messages.properties	2020-02-05 14:00:48.000000000 +0900
@@ -25,6 +25,7 @@
 AccountLocked = authn
 AuthenticationException = authn
 InvalidCredentials = authn
+InvalidCSRFToken = invalid-csrf-token
 NoCredentials = authn
 NoPotentialFlow = authn
 RequestUnsupported = authn
@@ -123,13 +124,23 @@
 # Logout-related messages
 
 idp.logout.sp-initiated = You have been logged out of the following service:
-idp.logout.ask = Would you like to attempt to log out of all services accessed during your session? \
-                    Please select <strong>Yes</strong> or <strong>No</strong> to ensure the logout \
-                    operation completes, or wait a few seconds for Yes.
-idp.logout.contactServices = If you proceed, the system will attempt to contact the following services:
+idp.logout.prompt = Choose one of the following, or wait a few seconds for the default.
+idp.logout.idponly = Logout Locally
+idp.logout.idponly.caption = End your SSO session.
+idp.logout.global = Logout Globally
+idp.logout.global.caption = End your SSO session and attempt logout of services accessed during session.
+idp.logout.cancel = Cancel
+idp.logout.cancel.caption = Cancel logout and retain your SSO session.
+idp.logout.contactServices = If instructed, the system will attempt to contact the following services:
 idp.logout.complete = The logout operation is complete, and no other services appear to have been accessed during this session.
 idp.logout.local = You elected not to log out of all the services accessed during your session.
 idp.logout.attempt = Attempting to log out of the following services:
+idp.logout.cancelled = Logout has been cancelled.
+
+# Legacy V3 UI
+idp.logout.ask = Would you like to attempt to log out of all services accessed during your session? \
+                    Please select <strong>Yes</strong> or <strong>No</strong> to ensure the logout \
+                    operation completes, or wait a few seconds for Yes.
 
 # Messages related to attribute release consent.
 
@@ -299,6 +310,9 @@
 invalid-event.message = <p>The underlying software encountered an event to which it was not programmed to respond.</p><br/> \
                          <p>Please report this problem to your Help Desk or administrative staff. It has \
                          also been logged for an administrator to review.</p>
+                         
+invalid-csrf-token.title= Processing Error
+invalid-csrf-token.message= CSRF token verification failed.
 
 error.title = Error
 error.message = An error occurred: $eventId