diff --git a/Compiler/Compiler.cs b/Compiler/Compiler.cs
index 8a01dc373..e595f8e5a 100644
--- a/Compiler/Compiler.cs
+++ b/Compiler/Compiler.cs
@@ -1923,13 +1923,18 @@ namespace PascalABCCompiler
                 {
                     cdo.Title = cds[0].directive;
                 }
+                if (compilerDirectives.TryGetValue(TreeConverter.compiler_string_consts.description_string, out cds))
+                {
+                    cdo.Description = cds[0].directive;
+                }
                 if (compilerDirectives.TryGetValue(TreeConverter.compiler_string_consts.main_resource_string, out cds))
                 {
                     if (compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.product_string) ||
                         compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.version_string) ||
                         compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.company_string) ||
                         compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.trademark_string) ||
-                        compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.title_string))
+                        compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.title_string) ||
+                        compilerDirectives.ContainsKey(TreeConverter.compiler_string_consts.description_string))
                     {
                         ErrorsList.Add(new MainResourceNotAllowed(cds[0].location));
                     }
@@ -1985,6 +1990,8 @@ namespace PascalABCCompiler
                         cdo.Copyright = project.copyright;
                     if (!string.IsNullOrEmpty(project.title))
                         cdo.Title = project.title;
+                    if (!string.IsNullOrEmpty(project.description))
+                        cdo.Description = project.description;
                     if (!string.IsNullOrEmpty(project.app_icon) && false)
                     {
                         //cdo.MainResourceFileName = project.app_icon;
@@ -2009,7 +2016,7 @@ namespace PascalABCCompiler
                             sw.WriteLine("VALUE \"ProductName\"," + "\"" + cdo.Product + "\"");
                             sw.WriteLine("VALUE \"FileVersion\"," + "\"" + ver + "\"");
                             sw.WriteLine("VALUE \"ProductVersion\"," + "\"" + ver + "\"");
-                            sw.WriteLine("VALUE \"FileDescription\"," + "\"" + "" + "\"");
+                            sw.WriteLine("VALUE \"FileDescription\"," + "\"" + cdo.Description + "\"");
                             sw.WriteLine("VALUE \"OriginalFileName\"," + "\"" + Path.GetFileName(CompilerOptions.OutputFileName) + "\"");
                             sw.WriteLine("VALUE \"InternalName\"," + "\"" + Path.GetFileNameWithoutExtension(CompilerOptions.OutputFileName) + "\"");
                             sw.WriteLine("VALUE \"CompanyName\"," + "\"" + cdo.Company + "\"");
diff --git a/Compiler/IProjectInfo.cs b/Compiler/IProjectInfo.cs
index 4ac261067..e4a4032eb 100644
--- a/Compiler/IProjectInfo.cs
+++ b/Compiler/IProjectInfo.cs
@@ -107,6 +107,12 @@ namespace PascalABCCompiler
             set;
         }
 
+        string Description
+        {
+            get;
+            set;
+        }
+
         string CommandLineArguments
         {
             get;
diff --git a/Compiler/ProjectInfo.cs b/Compiler/ProjectInfo.cs
index 9c3697211..ece2de27d 100644
--- a/Compiler/ProjectInfo.cs
+++ b/Compiler/ProjectInfo.cs
@@ -30,7 +30,8 @@ namespace PascalABCCompiler
         private string _trademark;
         private string _copyright;
         private string _title;
-		private PascalABCCompiler.ProjectType _project_type;
+        private string _description;
+        private PascalABCCompiler.ProjectType _project_type;
 		private List<SourceCodeFileInfo> _source_files = new List<SourceCodeFileInfo>();
 		private List<ReferenceInfo> _references = new List<ReferenceInfo>();
 		private List<ResourceInfo> _resources = new List<ResourceInfo>();
@@ -203,6 +204,18 @@ namespace PascalABCCompiler
             }
         }
 
+        public string description
+        {
+            get
+            {
+                return _description;
+            }
+            set
+            {
+                _description = value;
+            }
+        }
+
         public string path
 		{
 			get
@@ -481,6 +494,7 @@ namespace PascalABCCompiler
             writer.WriteAttributeString("Trademark", trademark);
             writer.WriteAttributeString("Copyright", copyright);
             writer.WriteAttributeString("Title", title);
+            writer.WriteAttributeString("Description", description);
             writer.WriteAttributeString("MajorVersion", Convert.ToString(major_version));
             writer.WriteAttributeString("MinorVersion", Convert.ToString(minor_version));
             writer.WriteAttributeString("BuildVersion", Convert.ToString(build_version));
@@ -547,7 +561,7 @@ namespace PascalABCCompiler
             trademark = reader.GetAttribute("Trademark");
             copyright = reader.GetAttribute("Copyright");
             title = reader.GetAttribute("Title");
-            if (title == null) title = ""; //Проверка на null, так как раньше этого атрибута не было
+            description = reader.GetAttribute("Description");
             major_version = Convert.ToInt32(reader.GetAttribute("MajorVersion"));
             minor_version = Convert.ToInt32(reader.GetAttribute("MinorVersion"));
             build_version = Convert.ToInt32(reader.GetAttribute("BuildVersion"));
@@ -759,6 +773,18 @@ namespace PascalABCCompiler
                 _title = value;
             }
         }
+
+        public string Description
+        {
+            get
+            {
+                return _description;
+            }
+            set
+            {
+                _description = value;
+            }
+        }
     }
 	
 	public class SourceCodeFileInfo : PascalABCCompiler.IFileInfo
diff --git a/NETGenerator/NETGenerator.cs b/NETGenerator/NETGenerator.cs
index 6c067ad4a..8b62dd6b4 100644
--- a/NETGenerator/NETGenerator.cs
+++ b/NETGenerator/NETGenerator.cs
@@ -93,6 +93,13 @@ namespace PascalABCCompiler.NETGenerator
             get { return _Title; }
             set { _Title = value; NeedDefineVersionInfo = true; }
         }
+        private string _Description = "";
+
+        public string Description
+        {
+            get { return _Description; }
+            set { _Description = value; NeedDefineVersionInfo = true; }
+        }
 
         public string MainResourceFileName = null;
 
@@ -905,6 +912,8 @@ namespace PascalABCCompiler.NETGenerator
 
             ab.SetCustomAttribute(new CustomAttributeBuilder(typeof(System.Reflection.AssemblyTitleAttribute).GetConstructor(new Type[] { typeof(string) }), new object[] { options.Title }));
 
+            ab.SetCustomAttribute(new CustomAttributeBuilder(typeof(System.Reflection.AssemblyDescriptionAttribute).GetConstructor(new Type[] { typeof(string) }), new object[] { options.Description }));
+
             if (RunOnly)
             {
                 object main_class = ab.CreateInstance(cur_unit + ".Program");
diff --git a/TreeConverter/TreeConversion/compiler_string_consts.cs b/TreeConverter/TreeConversion/compiler_string_consts.cs
index 606887d55..add3687e0 100644
--- a/TreeConverter/TreeConversion/compiler_string_consts.cs
+++ b/TreeConverter/TreeConversion/compiler_string_consts.cs
@@ -339,6 +339,7 @@ namespace PascalABCCompiler.TreeConverter
         public static string trademark_string = "trademark";
         public static string main_resource_string = "mainresource";
         public static string title_string = "title";
+        public static string description_string = "description";
 
         public static string system_unit_marker = "__IS_SYSTEM_MODULE";
         public static string system_unit_file_name = "PABCSystem";
diff --git a/VisualPascalABCNET/Projects/ProjectProperties.Designer.cs b/VisualPascalABCNET/Projects/ProjectProperties.Designer.cs
index 13f113ccf..060c518b1 100644
--- a/VisualPascalABCNET/Projects/ProjectProperties.Designer.cs
+++ b/VisualPascalABCNET/Projects/ProjectProperties.Designer.cs
@@ -470,6 +470,7 @@ namespace VisualPascalABC
         private System.Windows.Forms.TextBox tbTradeMark;
         private System.Windows.Forms.TextBox tbCopyright;
         //private System.Windows.Forms.TextBox tbTitle;
+        //private System.Windows.Forms.TextBox tbDescription;
         private System.Windows.Forms.Label label12;
         private System.Windows.Forms.OpenFileDialog openFileDialog1;
         private System.Windows.Forms.FolderBrowserDialog folderBrowserDialog1;
diff --git a/VisualPascalABCNET/Projects/ProjectProperties.cs b/VisualPascalABCNET/Projects/ProjectProperties.cs
index f6bea3b57..1b98f8879 100644
--- a/VisualPascalABCNET/Projects/ProjectProperties.cs
+++ b/VisualPascalABCNET/Projects/ProjectProperties.cs
@@ -79,7 +79,8 @@ namespace VisualPascalABC
             prj.Company = this.tbCompany.Text;
             prj.Trademark = this.tbTradeMark.Text;
             prj.Copyright = this.tbCopyright.Text;
-            //prj.Title = this.tbTitle.Text;
+            //if (!string.IsNullOrEmpty(prj.Title)) prj.Title = this.tbTitle.Text;
+            //if (!string.IsNullOrEmpty(prj.Description)) prj.Description = this.tbDescription.Text;
         }
 
         private void ProjectProperties_FormClosing(object sender, FormClosingEventArgs e)
diff --git a/bin/Lng/Eng/CompilerErrors.dat b/bin/Lng/Eng/CompilerErrors.dat
index c5810a233..2cfb32a9b 100644
--- a/bin/Lng/Eng/CompilerErrors.dat
+++ b/bin/Lng/Eng/CompilerErrors.dat
@@ -12,7 +12,7 @@ CYCLIC_UNIT_REFERENCE_WITH_UNIT_{0}=Cyclic unit reference with unit '{0}'
 UNDEFINED_SEMANTIC_ERROR{0}=Undefined semantic error : {0}
 RESOURCEFILE_{0}_NOT_FOUND=Resource file '{0}' not found
 DUPLICATE_USES_UNIT{0}=Duplicate identifier '{0}' in uses section
-MAINRESOURCE_NOT_ALLOWED=mainresource can not be used with the directives: product, version, company, trademark, title
+MAINRESOURCE_NOT_ALLOWED=mainresource can not be used with the directives: product, version, company, trademark, title, description
 DUPLICATE_DIRECTIVE{0}=Duplicate directive {0}
 FILE_{0}_NOT_FOUND=File '{0}' not found
 
diff --git a/bin/Lng/Rus/CompilerErrors.dat b/bin/Lng/Rus/CompilerErrors.dat
index 4a9691414..8935c289b 100644
--- a/bin/Lng/Rus/CompilerErrors.dat
+++ b/bin/Lng/Rus/CompilerErrors.dat
@@ -12,7 +12,7 @@ CYCLIC_UNIT_REFERENCE_WITH_UNIT_{0}=Циклическая связь с мод
 UNDEFINED_SEMANTIC_ERROR{0}=Неопределенная семантическая ошибка : {0} 
 RESOURCEFILE_{0}_NOT_FOUND=Файл '{0}' не найден
 DUPLICATE_USES_UNIT{0}=Повторное подключение модуля {0} в секции uses
-MAINRESOURCE_NOT_ALLOWED=Недопустимо совместное использование директивы mainresource и директив product, version, company, trademark, title
+MAINRESOURCE_NOT_ALLOWED=Недопустимо совместное использование директивы mainresource и директив product, version, company, trademark, title, description
 DUPLICATE_DIRECTIVE{0}=Повторное объявление директивы {0}
 FILE_{0}_NOT_FOUND=Файл '{0}' не найден
 
diff --git a/bin/Lng/Ukr/CompilerErrors.dat b/bin/Lng/Ukr/CompilerErrors.dat
index 4c1fc4193..ea3b397b9 100644
--- a/bin/Lng/Ukr/CompilerErrors.dat
+++ b/bin/Lng/Ukr/CompilerErrors.dat
@@ -12,7 +12,7 @@ CYCLIC_UNIT_REFERENCE_WITH_UNIT_{0}=Циклічний зв'язок з моду
 UNDEFINED_SEMANTIC_ERROR{0}=Невизначена семантична помилка : {0} 
 RESOURCEFILE_{0}_NOT_FOUND=Файл '{0}' не знайдено
 DUPLICATE_USES_UNIT{0}=Повторне підключення модуля {0} в секції uses
-MAINRESOURCE_NOT_ALLOWED=Неприпустимо сумісне використання директиви mainresource і директив product, version, company, trademark, title
+MAINRESOURCE_NOT_ALLOWED=Неприпустимо сумісне використання директиви mainresource і директив product, version, company, trademark, title, description
 DUPLICATE_DIRECTIVE{0}=Повторное объявление директивы {0}
 FILE_{0}_NOT_FOUND=Файл '{0}' не знайдено