diff --git a/documentation/current/eiffelstudio/_images/es_gt_reset_tools_layout_01.png b/documentation/current/eiffelstudio/_images/es_gt_reset_tools_layout_01.png
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diff --git a/documentation/current/eiffelstudio/_images/es_gt_reset_tools_layout_01.png.data b/documentation/current/eiffelstudio/_images/es_gt_reset_tools_layout_01.png.data
new file mode 100644
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--- /dev/null
+++ b/documentation/current/eiffelstudio/_images/es_gt_reset_tools_layout_01.png.data
@@ -0,0 +1,3 @@
+title=es gt reset tools layout 01
+author=halw
+path=content/es-gt-reset-tools-layout-01
diff --git a/documentation/current/solutions/concurrent-computing/eiffelthread/eiffelthread-tutorial/once-features-multithreaded-mode.wiki b/documentation/current/solutions/concurrent-computing/eiffelthread/eiffelthread-tutorial/once-features-multithreaded-mode.wiki
index 4ab8a757..109eeb26 100644
--- a/documentation/current/solutions/concurrent-computing/eiffelthread/eiffelthread-tutorial/once-features-multithreaded-mode.wiki
+++ b/documentation/current/solutions/concurrent-computing/eiffelthread/eiffelthread-tutorial/once-features-multithreaded-mode.wiki
@@ -26,7 +26,7 @@ feature -- Access
 
     object_per_thread: OBJECT
             -- Once per thread.
-        once
+        once ("THREAD")
             create Result.make
         end
 
@@ -34,14 +34,22 @@ feature -- Access
             -- New 'object' (once per process)
             -- that could be shared between threads
             -- without reinitializing it.
-        note
-            once_status: global
-        once
+        once ("PROCESS")
             create Result.make
         end
 
 end -- class TEST_ONCE_PER_PROCESS
 </code>
+
+Note that if you don't precise any once's key, the default is once per thread. For instance the following once is per thread.
+<eiffel>
+   object_per_thread: OBJECT
+            -- Once per thread.
+        once
+            create Result.make
+        end
+</eiffel>
+
 You can do the same with once procedures.