.

ESP-IDF_Robot/tutorial/docs/build/html/_sources/data.rst.txt

@@ -33,6 +33,13 @@ When used with communication protocols like ESP-NOW, this struct is **encoded**
 **transmitted** at regular intervals or in response to user input, and finally
 **decoded** on the receiving end to control hardware.
 
+.. admonition:: What is struct?
+
+    In C programming, a struct (short for structure) is a user-defined data type that lets you group multiple variables of different types together under a 
+    single name. It's like a container that holds related information — perfect for organizing data that logically belongs together. Structs are especially 
+    powerful in systems programming, embedded projects, and when dealing with raw binary data — like parsing sensor input or transmitting control packets over 
+    ESP-NOW.
+
 Data Payload
 ------------