From 40993d824123f57f7f07b74ee3a3d72e2e06b64e Mon Sep 17 00:00:00 2001
From: Alan Wang <44191076+alankrantas@users.noreply.github.com>
Date: Sun, 14 Jun 2020 02:51:21 +0800
Subject: [PATCH] Update README.md

---
 README.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 1773cca..d65dc44 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,10 @@ gc.enable() # auto memory recycle
 gc.collect() # force memory recycle
 ```
 
+## Recursion is Not Welcomed
+
+Since micro:bit has very limited memory, the recursion depth is severely limited. Only [8 nested function calls or so](https://mail.python.org/pipermail/microbit/2016-February/000896.html) can be used without triggering RuntimeError. 
+
 ## Classic Blinky
 
 ```python
@@ -180,7 +184,7 @@ while True:
     sleep(50)
 ```
 
-## LED Blinky Without Using Sleep
+## Blinky Without Using Sleep
 
 ```python
 from microbit import display