diff --git a/docs/learning_grpc.md b/docs/learning_grpc.md
index 5847387..dc45aa1 100644
--- a/docs/learning_grpc.md
+++ b/docs/learning_grpc.md
@@ -28,6 +28,8 @@ note:
 
 - RPCRuntime is also known as RPC communications package
 
+- One of the most important work the server developers must do is to define the **interface**
+
 - In that lab, the user-stub and server-stub used to be generated by a program called Lupine.
 
 [1] WHITE, J. E. A high-level framework for network-based resource sharing. In Proc. National Computer Conference, (June 1976).
@@ -183,11 +185,12 @@ note:
 
 note:
 
-Compatibility notes:
-    - Field deletion compatibility is supported at a syntax level
-        - Via the use of a special keyword
-    - Fields not found will be set a default value always
-    - Extra not supported fields will be ignored
+*Compatibility notes*
+
+- Field deletion compatibility is supported at a syntax level
+    - Via the use of a special keyword
+- Fields not found will be set a default value always
+- Extra not supported fields will be ignored
 
 ---