diff --git a/Mozi.HttpEmbedded/Template/PageEngine.cs b/Mozi.HttpEmbedded/Template/PageEngine.cs
index 4a0572398d7ece34c6801cfb37f06141797ebfd0..35f5eec19072544d2e42f4927982af20294bf4b4 100644
--- a/Mozi.HttpEmbedded/Template/PageEngine.cs
+++ b/Mozi.HttpEmbedded/Template/PageEngine.cs
@@ -142,6 +142,18 @@ namespace Mozi.HttpEmbedded.Template
         {
             throw new NotImplementedException();
         }
+        /// <summary>
+        /// $set表达式
+        /// </summary>
+        /// <returns></returns>
+        private PageEngine InflateExpressionSet()
+        {
+            throw new NotImplementedException();
+        }
+        /// <summary>
+        /// $math表达式
+        /// </summary>
+        /// <returns></returns>
         private PageEngine InflateExpressionMath()
         {
             Regex regParam = new Regex("\\$math\\.\\d+\\(.*\\)");
@@ -158,7 +170,7 @@ namespace Mozi.HttpEmbedded.Template
             return this;
         }
         /// <summary>
-        /// 应用函数format
+        /// $format表达式
         /// </summary>
         /// <returns></returns>
         private PageEngine InflateExpressionFormat()
@@ -181,7 +193,10 @@ namespace Mozi.HttpEmbedded.Template
             }
             return this;
         }
-
+        /// <summary>
+        /// IIF表达式
+        /// </summary>
+        /// <returns></returns>
         private PageEngine InflateExpressionIIF()
         {
             Regex regParam = new Regex("\\$iif\\(.*\\)");
diff --git a/README.md b/README.md
index 9dde26b5519abaa885d425b508140dae70d2be94..b9874a82bcb3370a7a8736627a74dddd75caeecc 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,10 @@ Mozi.HttpEmbedded在Socket之上使用异步单线程模型,构建了一个HTTP
 
 无
 
+## 程序处理流图
+
+![][flowchart]
+
 ## 功能与版本迭代
 	不定期对Mozi.HttpEmbedded的功能进行完善,解决各种BUG。HTTP标准功能繁多，需要一步步实现。
 
@@ -125,4 +129,5 @@ Mozi.HttpEmbedded在Socket之上使用异步单线程模型,构建了一个HTTP
 [1]:mailto:brotherqian@163.com
 [gitee]:https://gitee.com/myui_admin/mozi.git
 [github]:https://github.com/MoziCoder/Mozi.HttpEmbedded.git
-[codechina]:https://codechina.csdn.net/mozi/mozi.httpembedded.git
\ No newline at end of file
+[codechina]:https://codechina.csdn.net/mozi/mozi.httpembedded.git
+[flowchart]:./handbook/static/img/furionlogo.png
\ No newline at end of file