learn topic callout

project-docs/wave-03.md

@@ -1,5 +1,7 @@
 # Wave 03: Event Handling and Lifting Up State
 
+**Learn Topics: State and Event Handling & Lifting Up State required for this wave**
+
 In this wave we will update the components to manage a **like** feature. 
 
 - Add behavior to heart button in `ChatEntry` so that when it is clicked it toggles from an empty heart (🤍) to a filled heart (❤️) and from a filled heart (❤️) to an empty heart (🤍).
@@ -20,4 +22,4 @@ In this wave we will update the components to manage a **like** feature.
 The tests for this component are integration tests. They don't make assumptions about the implementation details of like feature. The tests verify the following functionality:
 - When the user click on a 🤍 button it changes to a ❤️, and when the user clicks on a ❤️ it changes to a 🤍. This test also verifies that clicking on one `ChatEntry`'s like button (🤍) doesn't change other `ChatEntry`'s buttons. 
 - The correct number of filled hearts is displayed at the top of the screen.
-- If you make a design decision to use a different emoji, you will need to change the tests accordingly.
+- If you make a design decision to use a different emoji, you will need to change the tests accordingly.