WebLab.md

@@ -75,7 +75,7 @@ To hide/publish assignments
 
 
 #### Set time window for availability
-If an assignment should only be available, after, until or during a specified time frame, the dates can be configured in the `Edit Assignment` view:  
+If an assignment should only become available after, until or during a specified time frame, the dates can be configured in the `Edit Assignment` view:  
 <img src="uploads/71e9056655d5f9aef54f8148470f3c63/set-time-window.png" height="250px" />
 
 #### Deadlines