- updated _sidebar
- fixed some typos in previously updated pages

EventHandler.md

@@ -16,7 +16,7 @@ public:
 ```
 
 ## EventHandler
-The **EventHandler** class, in additions to EventHandlerBase, also extends the ActiveObejct interface.  
+The **EventHandler** class, in addition to EventHandlerBase, also extends the ActiveObejct interface.  
 In fact an EventHandler is a special ActiveObject that periodically checks a synchronized queue of events. When new events are present they can be removed from the queue and processed.
 
 ### Methods
@@ -24,7 +24,7 @@ EventHadler offers two main methods:
 - **virtual void postEvent(const Event& ev)**: overridden from EventHandlerBase, it enqueues the event passed as a parameters.
 - **virtual void handleEvent(const Event& ev)**: protected method that is periodically called in the active objects thread. In fact in the *run()* method, whenever an event is present in the queue, it gets removed and the *handleEvent* method is called. The *handleEvent* method has to be overridden and implemented by any class that extends EventHandler.  
   
-You can find the complete definition of EventHandler in `src/shared/events/EventHandler.h`.
+You can find the complete implementation of EventHandler in `src/shared/events/EventHandler.h`.
 
 ### Example
 This example shows how to define a very simple custom EventHandler.