diff --git a/README.md b/README.md
index 9c34507d..a3b67f22 100644
--- a/README.md
+++ b/README.md
@@ -20,11 +20,11 @@ jsMind is mind map library built by javascript, it base on html5 canvas and svg.
diff --git a/docs/en/1.usage.md b/docs/en/1.usage.md
index 84d86fea..2825c52c 100644
--- a/docs/en/1.usage.md
+++ b/docs/en/1.usage.md
@@ -14,22 +14,22 @@
At first, 2 files (jsmind.css and jsmind.js) are required. Here we link to the resources on the CDN. It is recommended to use the latest version.
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```
> CDNs in common use: [UNPKG](https://unpkg.com/jsmind/), [jsDelivr](https://www.jsdelivr.com/package/npm/jsmind/), and [the mirror of jsDelivr in China](https://jsd.onmicrosoft.cn/npm/jsmind/). the resource urls would look like:
-> - https://unpkg.com/jsmind@0.8.1/es6/jsmind.js
-> - https://cdn.jsdelivr.net/npm/jsmind@0.8.1/es6/jsmind.js
-> - https://jsd.onmicrosoft.cn/npm/jsmind@0.8.1/es6/jsmind.js
+> - https://unpkg.com/jsmind@0.8.2/es6/jsmind.js
+> - https://cdn.jsdelivr.net/npm/jsmind@0.8.2/es6/jsmind.js
+> - https://jsd.onmicrosoft.cn/npm/jsmind@0.8.2/es6/jsmind.js
>
> The version number appear in the url of CDN. It's strongly recommended that you also specify the version number in your project to avoid the risks that caused by version upgrades. Access the [jsMind on NPM](https://www.npmjs.com/package/jsmind) to get the latest version number of jsMind.
Add script jsmind.draggable-node.js for enabling draggable node feature.
```html
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```
The second, a div element should be in your HTML as container
diff --git a/docs/en/plugin-screenshot.md b/docs/en/plugin-screenshot.md
index 743c6689..6cdb39ae 100644
--- a/docs/en/plugin-screenshot.md
+++ b/docs/en/plugin-screenshot.md
@@ -18,16 +18,16 @@ This feature can support to export mind maps as png images.
```html
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```
> 常用的 CDN 有 [UNPKG](https://unpkg.com/jsmind/)，[jsDelivr](https://www.jsdelivr.com/package/npm/jsmind/)，以及 jsDelivr 的[国内镜像](https://jsd.onmicrosoft.cn/npm/jsmind/)。文件路径大概像这样：
-> - https://unpkg.com/jsmind@0.8.1/es6/jsmind.js
-> - https://cdn.jsdelivr.net/npm/jsmind@0.8.1/es6/jsmind.js
-> - https://jsd.onmicrosoft.cn/npm/jsmind@0.8.1/es6/jsmind.js
+> - https://unpkg.com/jsmind@0.8.2/es6/jsmind.js
+> - https://cdn.jsdelivr.net/npm/jsmind@0.8.2/es6/jsmind.js
+> - https://jsd.onmicrosoft.cn/npm/jsmind@0.8.2/es6/jsmind.js
>
> 示例中url中都有版本号，强烈建议你在项目里也指明版本号，以避免版本升级给你的项目带来风险。访问 [NPM 上的 jsMind](https://www.npmjs.com/package/jsmind) 可以获取 jsmind 的最新版本号。
如果希望能够通过鼠标拖拽的方式移动节点，需要额外引用 jsmind.draggable-node.js 文件
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```
其次，要为 jsMind 准备一个容器，jsMind 将在这个容器里显示思维导图。可自行定义容器的id、大小及样式。
diff --git a/docs/zh/plugin-screenshot.md b/docs/zh/plugin-screenshot.md
index 4c986b93..311da80e 100644
--- a/docs/zh/plugin-screenshot.md
+++ b/docs/zh/plugin-screenshot.md
@@ -20,16 +20,16 @@
```html
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diff --git a/example/2_features_cn.html b/example/2_features_cn.html
index b08e66f1..8a09fcbb 100644
--- a/example/2_features_cn.html
+++ b/example/2_features_cn.html
@@ -7,7 +7,7 @@