1 files changed, 17 insertions, 5 deletions

diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 7c480c52f..47129ea74 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -18,8 +18,10 @@ Interested in contributing? Awesome!
   - [Server side](#server-side)
   - [Client side](#client-side)
   - [Client and server side](#client-and-server-side)
-  - [Testing the federation of PeerTube servers](#testing-the-federation-of-peertube-servers)
-  - [Unit tests](#unit-tests)
+  - [RTL layout](#rtl-layout)
+  - [Testing](#testing)
+    - [Unit tests](#unit-tests)
+    - [Testing the federation of PeerTube servers](#testing-the-federation-of-peertube-servers)
   - [Emails](#emails)
 - [Plugins & Themes](#plugins--themes)
 
@@ -163,6 +165,14 @@ and the web server is automatically restarted.
 $ npm run dev
 ```
 
+### RTL layout
+
+To test RTL layout using `ar` locale:
+
+```
+$ npm run dev -- --ar-locale
+```
+
 ### Testing
 
 Your code contributions must pass the tests before they can be merged. Tests ensure most of the application behaves
@@ -216,14 +226,16 @@ $ createdb -O peertube peertube_test{1,2,3}
 Build the application and flush the old tests data:
 
 ```
-$ npm run build -- --light
+$ npm run build
 $ npm run clean:server:test
 ```
 
-This will run 3 nodes:
+To run 3 nodes:
 
 ```
-$ npm run play
+$ NODE_APP_INSTANCE=1 NODE_ENV=test npm start
+$ NODE_APP_INSTANCE=2 NODE_ENV=test npm start
+$ NODE_APP_INSTANCE=3 NODE_ENV=test npm start
 ```
 
 Then you will get access to the three nodes at `http://localhost:900{1,2,3}`