diff --git a/doc/Tool_Api.md b/doc/Tool_Api.md
index 8d3e41e..eff8b02 100644
--- a/doc/Tool_Api.md
+++ b/doc/Tool_Api.md
@@ -74,6 +74,40 @@ console.html('<span style="color:red">Red</span>');
 
 ## Info
 
+Display special information, could be used for displaying user info to track 
+user logs.
+ 
+By default, page url and browser user agent is shown.
+
+### clear
+
+Clear infos.
+
+### add
+
+Add infos.
+
+|Name   |Type  |Desc        |
+|-------|------|------------|
+|name   |string|Info name   |
+|content|string|Info content|
+
+```javascript
+info.add('title', 'content');
+```
+
+### remove
+
+Remove specified info.
+
+|Name|Type  |Desc     |
+|----|------|---------|
+|name|string|Info name|
+
+```javascript
+info.remove('title');
+```
+
 ## Snippets
 
 Allow you to register small function that can be triggered multiple times.
diff --git a/src/Info/Info.es6 b/src/Info/Info.es6
index 2a7db7a..6827e56 100644
--- a/src/Info/Info.es6
+++ b/src/Info/Info.es6
@@ -28,6 +28,27 @@ export default class Info extends Tool
 
         return this;
     }
+    remove(name)
+    {
+        let msgs = this._msgs;
+
+        for (let i = 0, len = msgs.length; i < len; i++)
+        {
+            if (msgs[i].name === name) msgs.splice(i, 1);
+        }
+
+        this._render();
+
+        return this;
+    }
+    clear()
+    {
+        this._msgs = [];
+
+        this._render();
+
+        return this;
+    }
     _addDefInfo()
     {
         util.each(defInfo, info => this.add(info.name, info.val));
diff --git a/src/Info/defInfo.es6 b/src/Info/defInfo.es6
index c09a54b..33de883 100644
--- a/src/Info/defInfo.es6
+++ b/src/Info/defInfo.es6
@@ -6,9 +6,5 @@ export default [
     {
         name: 'User Agent',
         val: navigator.userAgent
-    },
-    {
-        name: 'Help',
-        val: 'Use eruda.get("info").add("name", "value") to add your own custom info.'
     }
 ];
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diff --git a/test/info.js b/test/info.js
index e69de29..c3c7254 100644
--- a/test/info.js
+++ b/test/info.js
@@ -0,0 +1,37 @@
+var tool = eruda.get('info'),
+    $tool = $('.eruda-info');
+
+describe('default', function ()
+{
+    it('location', function ()
+    {
+        expect($tool.find('.eruda-content').eq(0)).toContainText(location.href);
+    });
+
+    it('user agent', function ()
+    {
+        expect($tool.find('.eruda-content').eq(1)).toContainText(navigator.userAgent);
+    });
+});
+
+describe('basic', function ()
+{
+    it('clear', function ()
+    {
+        tool.clear();
+        expect($tool.find('li')).toHaveLength(0);
+    });
+
+    it('add', function ()
+    {
+        tool.add('test', 'eruda');
+        expect($tool.find('.eruda-title')).toContainText('test');
+        expect($tool.find('.eruda-content')).toContainText('eruda');
+    });
+
+    it('remove', function ()
+    {
+        tool.remove('test');
+        expect($tool.find('li')).toHaveLength(0);
+    });
+});
\ No newline at end of file