diff --git a/README.md b/README.md
index 344b93f..369cf60 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,16 @@ manage communication between browser tabs
     $bt.send({ name : $bt.CMD_CUSTOM, customKey : 'customValue' });
 
 
+### Bonus
+
+    // alias localStorage : clear|rem|get|set
+    $l;
+    // alias json : str|obj
+    $j
+    // minimal vanilla jquery style : ready|on|html|append|attr|val|foreach
+    $v
+
+
 ### Demo
 
 on chromium/chrome browser make sure to test on a web server (not directly file://)
diff --git a/demo.html b/demo.html
index 1225686..35d95f8 100644
--- a/demo.html
+++ b/demo.html
@@ -1,7 +1,7 @@
 <!doctype>
 <html>
 <head>
-    <title>pluie.org bt demo</title>
+    <title>pluie.org bt demo - v0.4</title>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <style>
     body        { background-color:#888; color:white; font-family:arial; font-size:1.3rem; }
@@ -11,13 +11,13 @@
     button      { padding:5px 15px; }
     h3          { margin:35px 0 10px 0; }
     h2          { margin:5px 0 0 0; }
-    textarea    { padding:8px 5px; border-radius:10px; border-style:solid; width:100%; height:120px; }
+    textarea    { padding:8px 5px; border-radius:10px; border-style:solid; width:100%; height:120px; font-size:1.2rem; }
     #test       { margin:20px; background-color:white; padding:20px; border: 1px dashed #aaa; }
     </style>
 </head>
 <body>
 <h2>pluie.org bt demo : </h2>
-<span>author : a-sansara</span>
+<span>author : a-sansara - version : 0.4</span>
 <div>
 <p>
     this js lib can perform several actions on browser tabs.
@@ -41,7 +41,7 @@ enter txt or html : <br/>
 <h3>Target output</h3>
 <div id="test"></div>
 </div>
-<script type="text/javascript" src="src/bt.js"></script>
+<script type="text/javascript" src="src/bt-min.js"></script>
 <script type="text/javascript">
 // define a new custom cmd
 $bt.CMD_CUSTOM = "customCmd";
diff --git a/src/bt-min.js b/src/bt-min.js
new file mode 100644
index 0000000..a2f09ac
--- /dev/null
+++ b/src/bt-min.js
@@ -0,0 +1,6 @@
+/* by a-sansara - https://github.com/pluie-org/bt */var $bt={TRACE:true&&typeof console!="undefined",LS_TABS:'bt.tabs',LS_CURTAB:'bt.ctab',LS_CMD:'bt.cmd',CMD_SYNC:'bt.sync',CMD_APPEND:'dom.append',CMD_HTML:'dom.html',CMD_RELOAD:'bt.reload',init:function(fn){this._init(fn);},on:function(cmd){this.log(cmd);},log:function(data){if(this.TRACE)console.log(data);},send:function(cmd){cmd.uid=this.id+Math.random();cmd.from=this.id;if(typeof cmd.to=="undefined")cmd.to="*";$l.set(this.LS_CMD,$j.str(cmd));$l.rem(this.LS_CMD);},append:function(selector,data,btid){this._dom(this.CMD_APPEND,selector,data,btid);},html:function(selector,data,btid){this._dom(this.CMD_HTML,selector,data,btid);},sync:function(selector,btid){this._dom(this.CMD_HTML,selector,$v(selector).html(),btid);},reload:function(url,btid){$bt.send({name:$bt.CMD_RELOAD,url:url,to:!btid?'*':btid});},_refresh:function(){$bt.list=$j.obj($l.get($bt.LS_TABS));},_broadcast:function(){$bt.send({name:$bt.CMD_SYNC});},_remove:function(id){if(!id)id=$bt.id;var i=$bt.list.indexOf(id);if(i>-1)$bt.list.splice(i,1);},_init:function(fn){$v(window).on('beforeunload',$bt._unload);$v(window).on('storage',$bt._cmd);$v(window).on('focus',$bt._focus);$bt.id=(new Date).getTime();var t=$l.get($bt.LS_TABS);$bt.list=t==null?[]:$j.obj(t);$bt.list.push($bt.id);$l.set($bt.LS_TABS,$j.str($bt.list));$bt._broadcast();$bt.log($bt.list);if(typeof fn=="function")fn();},_dom:function(n,s,d,id){$bt.send({name:n,selector:s,data:d,to:!id?'*':id});},_unload:function(e){$bt._refresh();$bt._remove();$l.set($bt.LS_TABS,$j.str($bt.list));$bt._broadcast();return null;},_focus:function(e){$l.set($bt.LS_CURTAB,$bt.id);},_cmd:function(e){if(e.key!=$bt.LS_CMD)return;var cmd=$j.obj(e.newValue);if(!cmd)return;if(cmd.to=="*"||cmd.to==$bt.id){$bt.log("do "+cmd.name);$bt.log(cmd);switch(cmd.name){case $bt.CMD_SYNC:$bt._refresh();$bt.log($bt.list);break;case $bt.CMD_APPEND:$v(cmd.selector).append(cmd.data);break;case $bt.CMD_HTML:$v(cmd.selector).html(cmd.data);break;case $bt.CMD_RELOAD:window.location=typeof cmd.url!="undefined"?cmd.url:window.location;break;default:if(typeof $bt.on=="function")$bt.on(cmd);}}}}
+var $v=function(p){var s=typeof p=="string";var c=s?document.querySelectorAll(p):null;var a=s?[].slice.call(c):[p];delete(s);if(p==localStorage){return{clear:function(){return p.clear();},get:function(k){return p.getItem(k);},rem:function(k){return p.removeItem(k);},set:function(k,v){return p.setItem(k,v);}};}
+else if(p==JSON){return{str:function(o){return p.stringify(o);},obj:function(s){return p.parse(s);}};}
+else{this.foreach=function(f){[].forEach.call(c,f);};this.html=function(d){if(arguments.length==0)return a[0].innerHTML;else a[0].innerHTML=d;};this.append=function(d){this.foreach(function(n){n.innerHTML+=d;});};this.on=function(t,f,u){if(c!=null){this.foreach(function(n){n.addEventListener(t,f,u===true);});}
+else a[0].addEventListener(t,f,u===true);};this.val=function(d){if(arguments.length==0)return a[0].value;else a[0].value=d;};this.attr=function(k,v){if(arguments.length==1)return a[0].getAttribute(k);else a[0].setAttribute(k,v);};this.ready=function(f){document.addEventListener('DOMContentLoaded',f);};return this;}}
+var $l=$v(localStorage);var $j=$v(JSON);
diff --git a/src/bt.js b/src/bt.js
index 015b906..9314459 100644
--- a/src/bt.js
+++ b/src/bt.js
@@ -3,26 +3,47 @@
  * @contributors  :
  * @copyright     : pluie.org
  * @date          : 2015-12-10 22:22:34
- * @version       : 0.2
+ * @version       : 0.4
  * @license       : MIT
  * @require       : html5 localStorage
  * @desc          :
  *
- *  BrowserTab USAGE :
+ *  USAGE :
  *
  *
  *  Initialize
  *
- *      $(document).ready(function() {
+ *      $v(document).ready(function() {
  *          $bt.init();
  *      }
  *
+ *
  *  Internal Commands
  *
  *      // append data on node to other browser tabs
- *      $bt.append('#test', '<b>it's cool to append</b>');
+ *      $bt.append('#test', "<b>it's cool to append</b>");
+ *
  *      // rewrite content on node to other browser tabs
- *      $bt.html('#test', '<b>it's cool to rewrite</b>');
+ *      $bt.html('#test', "<b>it's cool to rewrite</b>");
+ *
+ *      // rewrite content to specific browser tabs
+ *      $bt.html('#test', "<b>it's cool to rewrite</b>", '1449974562012');
+ *
+ *      // perform a node synchro to other browser tabs
+ *      $bt.sync('#test');
+ *
+ *      // reload other browser tabs
+ *      $bt.reload();
+ *
+ *      // reload other browser tabs to specific url
+ *      $bt.reload(window.location.path+"?reloaded=1");
+ *
+ *      // get browser tab list
+ *      $bt.list;
+ *
+ *      // current browser tab id
+ *      $bt.id;
+ *
  *
  *  Custom Commands
  *
@@ -41,6 +62,15 @@
  *      // send a custom command to other browser tabs
  *      $bt.send({ name : $bt.CMD_CUSTOM, customKey : 'customValue' });
  *
+ *  Bonus
+ *
+ *      // alias localStorage : clear|rem|get|set
+ *      $l;
+ *      // alias json : str|obj
+ *      $j
+ *      // minimal vanilla jquery style : ready|on|html|append|attr|val|foreach
+ *      $v
+ *
  *  enjoy !
  */
 var $bt  = {
@@ -224,7 +254,6 @@ var $bt  = {
 // vanilla minimal jquery style
 var $v = function(p) {
     var s  = typeof p == "string";
-    var z = "cool";
     var c = s ? document.querySelectorAll(p) : null;
     var a = s ? [].slice.call(c) : [p];
     delete(s);
@@ -284,7 +313,7 @@ var $v = function(p) {
     return this;
     }
 }
-// alias localStorage
+// alias localStorage : clear|rem|get|set
 var $l = $v(localStorage);
-// alias json
+// alias json : str|obj
 var $j = $v(JSON);
