diff --git a/CodeCompletion/DomSyntaxTreeVisitor.cs b/CodeCompletion/DomSyntaxTreeVisitor.cs
index 28be778f0..1d8575b62 100644
--- a/CodeCompletion/DomSyntaxTreeVisitor.cs
+++ b/CodeCompletion/DomSyntaxTreeVisitor.cs
@@ -2246,8 +2246,9 @@ namespace CodeCompletion
                     //(ret_tn as TypeScope).name = _type_declaration.type_name.name;
                     returned_scope.si.name = _type_declaration.type_name.name;
                     returned_scope.si.description = returned_scope.GetDescription();
-                    if (!(_type_declaration.type_def is class_definition))
-                        returned_scope.MakeSynonimDescription();
+                    // Это мертвый код EVA
+                    //if (!(_type_declaration.type_def is class_definition))
+                    //    returned_scope.MakeSynonimDescription();
                     returned_scope.loc = get_location(_type_declaration);//new location(loc.begin_line_num,loc.begin_column_num,ret_tn.loc.end_line_num,ret_tn.loc.end_column_num,ret_tn.loc.doc);
                     if (_type_declaration.type_def is class_definition)
                     {
@@ -2317,7 +2318,8 @@ namespace CodeCompletion
                 cur_scope.AddName(_type_declaration.type_name.name, returned_scope);
                 if (returned_scope is ProcType)
                 {
-                    returned_scope.MakeSynonimDescription();
+                    ((TypeScope)returned_scope).aliased = true;
+                    returned_scope.BuildDescription();
                 }
                 location loc = get_location(_type_declaration);
                 if (returned_scope.loc == null)
diff --git a/CodeCompletion/SymTable.cs b/CodeCompletion/SymTable.cs
index 01edb6484..d5586f952 100644
--- a/CodeCompletion/SymTable.cs
+++ b/CodeCompletion/SymTable.cs
@@ -587,11 +587,6 @@ namespace CodeCompletion
             return "";
         }
 
-        public virtual void MakeSynonimDescription()
-        {
-
-        }
-
         public virtual string GetDescriptionWithoutDoc()
         {
             return si.name;
@@ -2608,13 +2603,6 @@ namespace CodeCompletion
             return is_constructor;
         }
 
-        // не используется нигде для ProcScope EVA
-        public override void MakeSynonimDescription() 
-        {
-            //aliased = true;
-            si.description = CodeCompletionController.CurrentParser?.LanguageInformation.GetSynonimDescription(this);
-        }
-
         //zavershenie opisanija, vyzyvaetsja kogda parametry razobrany
         public void Complete()
         {
@@ -4265,11 +4253,20 @@ namespace CodeCompletion
             this.exact = exact;
         }
 
+        private static string GetDescription(TypeScope t)
+        {
+            if (t.Description != null)
+                return t.Description;
+
+            t.BuildDescription();
+            return t.Description;
+        }
+
         private struct ScopeComparer : IEqualityComparer<TypeScope>
         {
             public bool Equals(TypeScope t1, TypeScope t2) => t1.IsEqual(t2);
 
-            public int GetHashCode(TypeScope t) => t.GetDescription().GetHashCode();
+            public int GetHashCode(TypeScope t) => GetDescription(t).GetHashCode();
         }
 
         public bool Equals(InstanceCreationContext otherInfo)
@@ -4282,8 +4279,8 @@ namespace CodeCompletion
 
         public override int GetHashCode()
         {
-            return string.Join("", genericArguments.Select(arg => arg.si != null ? arg.GetDescription() : "")
-                .Concat(new string[] { originalType.GetDescription(), exact.ToString() })).GetHashCode();
+            return string.Join("", genericArguments.Select(arg => arg.si != null ? GetDescription(arg) : "")
+                .Concat(new string[] { GetDescription(originalType), exact.ToString() })).GetHashCode();
         }
     }
 
@@ -4817,12 +4814,6 @@ namespace CodeCompletion
             implemented_interfaces.Add(type);
         }
 
-        public override void MakeSynonimDescription()
-        {
-            aliased = true;
-            si.description = CodeCompletionController.CurrentParser.LanguageInformation.GetSynonimDescription(this);
-        }
-
         public virtual bool IsConvertable(TypeScope ts, bool strong = false)
         {
             if (IsEqual(ts))
@@ -4938,6 +4929,10 @@ namespace CodeCompletion
         public override void BuildDescription()
         {
             si.description = CodeCompletionController.CurrentParser.LanguageInformation.GetDescription(this);
+
+            // Случай делегата
+            if (aliased && this is ProcType)
+                si.description = CodeCompletionController.CurrentParser.LanguageInformation.GetSynonimDescription(this);  
         }
 
         //opisanie, vysvechivaetsja v zheltkom okoshke
diff --git a/ParserTools/ParserTools/BaseLanguageInformation.cs b/ParserTools/ParserTools/BaseLanguageInformation.cs
index ed7d7d2e5..515bf04c2 100644
--- a/ParserTools/ParserTools/BaseLanguageInformation.cs
+++ b/ParserTools/ParserTools/BaseLanguageInformation.cs
@@ -1703,6 +1703,10 @@ namespace PascalABCCompiler.Parsers
             {
                 keyword = KeywordKind.Raise;
             }
+            else if (KeywordsStorage.KeywordsTreatedAsFunctions.Contains(s))
+            {
+                keyword = KeywordKind.None;
+            }
             else if (IsKeyword(s))
             {
                 keyword = KeywordKind.CommonKeyword;
diff --git a/ParserTools/ParserTools/Keywords/BaseKeywords.cs b/ParserTools/ParserTools/Keywords/BaseKeywords.cs
index 759ea58ac..cdca3d8d9 100644
--- a/ParserTools/ParserTools/Keywords/BaseKeywords.cs
+++ b/ParserTools/ParserTools/Keywords/BaseKeywords.cs
@@ -34,6 +34,11 @@ namespace PascalABCCompiler.Parsers
         /// </summary>
         public List<string> TypeKeywords { get; set; } = new List<string>();
 
+        /// <summary>
+        /// Ключевые слова, которые должны восприниматься как функции при парсинге выражений
+        /// </summary>
+        public HashSet<string> KeywordsTreatedAsFunctions { get; set; }
+
         /// <summary>
         /// Словарь соответствий ключевых слов их эквивалентам (задается пользователем в специальном файле)
         /// </summary>
@@ -83,6 +88,8 @@ namespace PascalABCCompiler.Parsers
 
             KeywordsForIntellisenseSet = new HashSet<string>(stringComparer);
 
+            KeywordsTreatedAsFunctions = new HashSet<string>(stringComparer);
+
             KeywordKinds = new Dictionary<string, KeywordKind>(stringComparer);
         }
 
@@ -102,7 +109,8 @@ namespace PascalABCCompiler.Parsers
                 return GetIdToken();
         }
 
-        public void CreateNewKeyword(string name, Enum token = null, KeywordKind kind = KeywordKind.None, bool isTypeKeyword = false, bool excludedInIntellisense = false)
+        public void CreateNewKeyword(string name, Enum token = null, KeywordKind kind = KeywordKind.None, 
+            bool isTypeKeyword = false, bool excludedInIntellisense = false, bool treatAsFunction = false)
         {
             name = ConvertKeyword(name);
 
@@ -115,6 +123,9 @@ namespace PascalABCCompiler.Parsers
                 KeywordsForIntellisenseSet.Add(name);
             }
 
+            if (treatAsFunction)
+                KeywordsTreatedAsFunctions.Add(name);
+
             // token null может передаваться, если это ключевое слово исключительно для Intellisense (например, break)
             if (token != null)
                 KeywordsToTokens[name] = (int)(object)token;
diff --git a/Parsers/PascalABCParserNewSaushkin/Keywords.cs b/Parsers/PascalABCParserNewSaushkin/Keywords.cs
index 6d6894c73..03a4e1522 100644
--- a/Parsers/PascalABCParserNewSaushkin/Keywords.cs
+++ b/Parsers/PascalABCParserNewSaushkin/Keywords.cs
@@ -26,8 +26,8 @@ namespace Languages.Pascal.Frontend.Core
             CreateNewKeyword("is", Tokens.tkIs);
             CreateNewKeyword("implicit", Tokens.tkImplicit);
             CreateNewKeyword("explicit", Tokens.tkExplicit);
-            CreateNewKeyword("sizeof", Tokens.tkSizeOf);
-            CreateNewKeyword("typeof", Tokens.tkTypeOf);
+            CreateNewKeyword("sizeof", Tokens.tkSizeOf, treatAsFunction: true);
+            CreateNewKeyword("typeof", Tokens.tkTypeOf, treatAsFunction: true);
             CreateNewKeyword("where", Tokens.tkWhere);
             CreateNewKeyword("array", Tokens.tkArray, isTypeKeyword: true);
             CreateNewKeyword("begin", Tokens.tkBegin);
diff --git a/TestSuite/intellisense_tests/extensionmethods8.pas b/TestSuite/intellisense_tests/extensionmethods8.pas
index 89df39d96..81f9ba24a 100644
--- a/TestSuite/intellisense_tests/extensionmethods8.pas
+++ b/TestSuite/intellisense_tests/extensionmethods8.pas
@@ -2,5 +2,5 @@
   var ch: char;
   var n: integer;
   (ch*n).Replace{@function string.Replace(oldChar: char; newChar: char): string;@}(#0,#32);
-  (2+3).Between{@(расширение) function integer.Between(a: integer; b: integer): boolean;@}(2,3);
+  (2+3).Between{@(расширение) function integer.Between(a: integer; b: integer; inclusive: boolean:=True): boolean;@}(2,3);
 end.
\ No newline at end of file