diff --git a/README.md b/README.md
index 01ec958..53326bc 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,11 @@ OR
 
 Create a symbolic link from your _.local_ directory and enable extension
 
-  ln -s $PWD/generic-monitor@gnome-shell-extensions/ ~/.local/share/gnome-shell/extensions/
-  gnome-extensions enable generic-monitor@gnome-shell-extensions
+```bash
+ln -s $PWD/generic-monitor@gnome-shell-extensions/ ~/.local/share/gnome-shell/extensions/
+
+gnome-extensions enable generic-monitor@gnome-shell-extensions
+```
 
 Restart GNOME
 
@@ -24,6 +27,7 @@ DBUS protocol
 
 All functions read JSON formatted parameters
 
+```js
   notify():
   {
       "group": "groupname",
@@ -64,26 +68,32 @@ All functions read JSON formatted parameters
   {
      "item": "<itemName>@<groupName>"
   }
+```
 
 
 DBUS object
 ===========
 
 <text_object> is defined as :
+```js
   "text" : {
     "name"  : "" // Optional, used with popup nested element
     <signals_description>,    // Optional, used with popup nested element
     "text"  : "Text to be displayed",
     "style" : "CSS style to be applied", // Optional
   }
+```
 
 <icon_object> is defined as :
+```js
   "icon" : {
     "path"  : "Icon path",
     "style" : "CSS style to be applied", // Optional
   }
+```
 
 <picture_object> is defined as :
+```js
   "picture" : {
     "name"  : "" // Optional, used with popup nested element
     <signals_description>,    // Optional, used with popup nested element
@@ -91,18 +101,21 @@ DBUS object
     "width"  : XXX, // Optional : Force width in pixels, can be -1 for defaut value
     "height" : XXX, // Optional : Force height in pixels, can be -1 for defaut value
   }
+```
 
 <popup_object is defuned as :
+```js
   "popup" : {
      "items": [<text_objects> and/or <picture_objects>]
   }
-  
+```
 
 Signals description
 ===================
 
 Signals can be :
 
+```js
   "on-click"          : ["signal"|"delete"|"open-popup"|"close-popup"|"toggle-popup"]
   "on-dblclick"       : ["signal"|"delete"|"open-popup"|"close-popup"|"toggle-popup"]
   "on-rightclick"     : ["signal"|"delete"|"open-popup"|"close-popup"|"toggle-popup"]
@@ -110,6 +123,7 @@ Signals can be :
   "on-enter"          : ["signal"|"delete"|"open-popup"|"close-popup"|"toggle-popup"]
   "on-leave"          : ["signal"|"delete"|"open-popup"|"close-popup"|"toggle-popup"]
   "on-scroll"         : ["signal"|"delete"|"open-popup"|"close-popup"|"toggle-popup"]
+```
 
 Targets :
 
@@ -118,7 +132,7 @@ Targets :
   * open-popup        : Open the popup if there is one
   * close-popup       : Close the popup if there is one
   * toggle-popup      : Toggle (open/close) the popup if there is one
-  
+
 
 Signal names emit when action "signal" is specified :
 
@@ -146,9 +160,13 @@ Example
 
 You can test it with command line :
 
-  gdbus call --session --dest org.gnome.Shell --object-path /com/soutade/GenericMonitor --method com.soutade.GenericMonitor.notify '{"group":"new","items":[{"name":"first","on-click":"toggle-popup","text":{"text":"Hello","style":"color:green"},"popup":{"items":[{"picture":{"path":"/tmp/cat.jpg"}}]}}]}'
+```bash
+# Create new group and add items
+gdbus call --session --dest org.gnome.Shell --object-path /com/soutade/GenericMonitor --method com.soutade.GenericMonitor.notify '{"group":"new","items":[{"name":"first","on-click":"toggle-popup","text":{"text":"Hello","style":"color:green"},"popup":{"items":[{"picture":{"path":"/tmp/cat.jpg"}}]}}]}'
 
-  gdbus call --session --dest org.gnome.Shell --object-path /com/soutade/GenericMonitor --method com.soutade.GenericMonitor.deleteGroups '{"groups":["new"]}'
+# Delete group
+gdbus call --session --dest org.gnome.Shell --object-path /com/soutade/GenericMonitor --method com.soutade.GenericMonitor.deleteGroups '{"groups":["new"]}'
+```
 
 Python examples are available @ https://indefero.soutade.fr/p/genericmonitor/source/tree/master/examples
 
@@ -158,12 +176,15 @@ Development
 
 After doing code update, you can test it within a nested window. In other cases you have to restart GNOME.
 
-  dbus-run-session -- gnome-shell --nested [--wayland]
+```bash
+dbus-run-session -- gnome-shell --nested [--wayland]
+```
 
 To see log & errors :
 
-  journalctl /usr/bin/gnome-shell
-
+```bash
+journalctl /usr/bin/gnome-shell
+```
 
 Licence
 -------