diff --git a/OnDemandUpdatePTU.pro b/OnDemandUpdatePTU.pro
index b87e632..1b86b82 100644
--- a/OnDemandUpdatePTU.pro
+++ b/OnDemandUpdatePTU.pro
@@ -99,6 +99,8 @@ DEFINES += QT_DEPRECATED_WARNINGS
 #           If the current time is between 0.00 - 4.00 o'clock, then a wrong
 #           trigger-value wil result in an UPDATE_STEP_NOT_NECESSARY.
 #           Move final processing to subclass UpdateProcessRunning.
+#           Disable EXIT-button for the whole update-process, except for the
+#           checking of the ISMAS-trigger-button (aka WAIT-button).
 VERSION="1.4.0"
 
 # PLANNED TODOS: