diff --git a/Convention/[Symbolization]/Detail/Keyword.cs b/Convention/[Symbolization]/Detail/Keyword.cs
index 7e112e4..cc09a61 100644
--- a/Convention/[Symbolization]/Detail/Keyword.cs
+++ b/Convention/[Symbolization]/Detail/Keyword.cs
@@ -53,7 +53,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="namespace"/> name</b>
+    /// <b><see langword="namespace"/> name { ... }</b>
     /// </summary>
     public sealed class Namespace : Internal.Keyword<Namespace>
     {
@@ -63,7 +63,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="def"/> FunctionName(type1 arg1, type args...) -> return-type</b>
+    /// <b><see langword="def"/> FunctionName(parameter-list) -> return-type { ... return return-type-instance; }</b>
     /// </summary>
     public sealed class FunctionDef : Internal.Keyword<FunctionDef>
     {
@@ -73,7 +73,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="return"/> symbol</b>
+    /// <b><see langword="return"/> symbol;</b>
     /// </summary>
     public sealed class Return : Internal.Keyword<Return>
     {
@@ -83,7 +83,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="if"/>(bool-expression)</b>
+    /// <b><see langword="if"/>(bool-expression) expression</b>
     /// </summary>
     public sealed class If : Internal.Keyword<If>
     {
@@ -103,7 +103,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="while"/>(bool-expression)</b>
+    /// <b><see langword="while"/>(bool-expression) expression</b>
     /// </summary>
     public sealed class While : Internal.Keyword<While>
     {
@@ -113,7 +113,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="break"/></b>
+    /// <b><see langword="break"/>;</b>
     /// </summary>
     public sealed class Break : Internal.Keyword<Break>
     {
@@ -123,7 +123,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="continue"/></b>
+    /// <b><see langword="continue"/>;</b>
     /// </summary>
     public sealed class Continue : Internal.Keyword<Continue>
     {
@@ -133,7 +133,7 @@ namespace Convention.Symbolization.Keyword
     }
 
     /// <summary>
-    /// <b><see langword="struct"/> structureName</b>
+    /// <b><see langword="struct"/> structureName { ... }</b>
     /// </summary>
     public sealed class Structure : Internal.Keyword<Structure>
     {
diff --git a/Convention/[Symbolization]/Detail/ScriptWordVariable.cs b/Convention/[Symbolization]/Detail/ScriptWordVariable.cs
new file mode 100644
index 0000000..e9a7c43
--- /dev/null
+++ b/Convention/[Symbolization]/Detail/ScriptWordVariable.cs
@@ -0,0 +1,38 @@
+namespace Convention.Symbolization.Internal
+{
+    public class ScriptWordVariable : CloneableVariable<ScriptWordVariable>
+    {
+        public readonly string word;
+
+        public ScriptWordVariable(string word) : base("")
+        {
+            this.word = word;
+        }
+
+        public override ScriptWordVariable CloneVariable(string targetSymbolName)
+        {
+            return new ScriptWordVariable(word);
+        }
+
+        public override bool Equals(ScriptWordVariable other)
+        {
+            return other is not null && word.Equals(other.word);
+        }
+
+        public Keyword GetKeyword()
+        {
+            if(Keyword.Keywords.TryGetValue(word, out var keyword))
+                return keyword;
+            return null;
+        }
+
+        public Variable GetVariable(SymbolizationContext context)
+        {
+            if (context.Variables.TryGetValue(word, out var variable))
+            {
+                return variable;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Convention/[Symbolization]/Symbolization.cs b/Convention/[Symbolization]/Symbolization.cs
index 73f3736..1a208c1 100644
--- a/Convention/[Symbolization]/Symbolization.cs
+++ b/Convention/[Symbolization]/Symbolization.cs
@@ -17,6 +17,8 @@ namespace Convention.Symbolization
         }
 
         public readonly SymbolizationContext ParentContext;
+        public readonly Dictionary<int, List<Internal.Variable>> ScriptWords = new();
+        public readonly Dictionary<int, List<Internal.Variable>> ScriptCommands = new();
         public readonly Dictionary<string, Internal.Variable> Variables = new();
         public readonly Internal.Namespace CurrentNamespace;