diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3.sln b/Cop.Borovkov.Var3/Cop.Borovkov.Var3.sln
index 1c8d7d9..ac79906 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3.sln
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3.sln
@@ -11,6 +11,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab3", "Lab3\Lab3.csproj",
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab3.Database", "Lab3.Database\Lab3.Database.csproj", "{698DE9E8-7885-4F98-AFE3-9A9C6CD2FCF5}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lab4", "Lab4\Lab4.csproj", "{FAE92C0B-0A2D-48B6-A55C-DE58A310CD58}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -33,6 +35,10 @@ Global
 		{698DE9E8-7885-4F98-AFE3-9A9C6CD2FCF5}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{698DE9E8-7885-4F98-AFE3-9A9C6CD2FCF5}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{698DE9E8-7885-4F98-AFE3-9A9C6CD2FCF5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FAE92C0B-0A2D-48B6-A55C-DE58A310CD58}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FAE92C0B-0A2D-48B6-A55C-DE58A310CD58}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FAE92C0B-0A2D-48B6-A55C-DE58A310CD58}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FAE92C0B-0A2D-48B6-A55C-DE58A310CD58}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfHistigramInfo.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfHistigramInfo.cs
index 5b5f839..607fad5 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfHistigramInfo.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfHistigramInfo.cs
@@ -3,7 +3,7 @@
 namespace Cop.Borovkov.Var3.Models
 {
     /// <summary>
-    /// Параметры для создания линейной диограммы
+    /// Параметры для создания линейной диаграммы
     /// </summary>
     public record PdfHistigramInfo
     {
@@ -18,7 +18,7 @@ namespace Cop.Borovkov.Var3.Models
         public string DocumentTitle { get; init; } = "Гистограмма";
 
         /// <summary>
-        /// Заголовок диограммы
+        /// Заголовок диаграммы
         /// </summary>
         public string HistogramTitle { get; init; } = "Гистограмма";
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfTableWithGroupingInfo.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfTableWithGroupingInfo.cs
index f920b4e..20f5b1f 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfTableWithGroupingInfo.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/Models/PdfTableWithGroupingInfo.cs
@@ -1,7 +1,7 @@
 namespace Cop.Borovkov.Var3.Models
 {
     /// <summary>
-    /// Параметры для создания таблици в пдф с группировкой по 1 столбцу
+    /// Параметры для создания таблицы в пдф с группировкой по 1 столбцу
     /// </summary>
     public class PdfTableWithGroupingInfo<TType> where TType : class
     {
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Enums/PdfMargin.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Enums/PdfMargin.cs
index 6553cec..fed1c83 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Enums/PdfMargin.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Enums/PdfMargin.cs
@@ -15,7 +15,7 @@ namespace PIHelperSh.PdfCreator.Enums
         /// <summary>
         /// Отступа нет
         /// </summary>
-        [TypeValue<string>("ocm")]
+        [TypeValue<string>("0cm")]
         None,
         /// <summary>
         /// Отступ небольшой
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/ImageModels/PdfImage.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/ImageModels/PdfImage.cs
index 60d52a5..6b52099 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/ImageModels/PdfImage.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/ImageModels/PdfImage.cs
@@ -29,7 +29,7 @@ namespace PIHelperSh.PdfCreator.Models.ImageModels
         public int? Height { get; set; } = null;
 
         /// <summary>
-        /// Выравнивание текста внутри параграфа (по умолчанию - по левой строне)
+        /// Выравнивание текста внутри параграфа (по умолчанию - по левой стороне)
         /// </summary>
         public PdfAlignmentType ImageAlignment { get; set; } = PdfAlignmentType.Left;
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramData.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramData.cs
index b518631..6bb07bb 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramData.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramData.cs
@@ -18,7 +18,7 @@ namespace PIHelperSh.PdfCreator.Models.PieChartModel
         public IEnumerable<(string Name, double Value)> Value { get; set; }
 
         /// <summary>
-        /// Цвет области на диаграме. При null будет использоватсся выдача цветов по умолчанию)
+        /// Цвет области на диаграмме. При null будет использоваться выдача цветов по умолчанию)
         /// </summary>
         public Color? Color { get; set; } = null;
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramModel.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramModel.cs
index b6c7bb2..c4fe900 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramModel.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfHistogramModel.cs
@@ -1,7 +1,7 @@
 namespace PIHelperSh.PdfCreator.Models.PieChartModel
 {
     /// <summary>
-    /// Модель линейной диограммы
+    /// Модель линейной диаграммы
     /// </summary>
     public class PdfHistogramModel : PdfPieChartModel
     {
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfPieChartData.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfPieChartData.cs
index 4542f04..2ac3137 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfPieChartData.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/PieChartModel/PdfPieChartData.cs
@@ -18,7 +18,7 @@ namespace PIHelperSh.PdfCreator.Models.PieChartModel
         public double Value { get; set; }
 
         /// <summary>
-        /// Цвет области на диаграме. При null будет использоватсся выдача цветов по умолчанию)
+        /// Цвет области на диаграмме. При null будет использоваться выдача цветов по умолчанию)
         /// </summary>
         public Color? Color { get; set; } = null;
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTable.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTable.cs
index 9c93e1b..c87f560 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTable.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTable.cs
@@ -34,7 +34,7 @@ namespace PIHelperSh.PdfCreator.Models.TableModels
         public PdfStyleType RowStyle = PdfStyleType.Basic;
 
         /// <summary>
-        /// Базовое выравнивание элементов сторок
+        /// Базовое выравнивание элементов в строке
         /// </summary>
         public PdfAlignmentType RowHorizontalAlignment = PdfAlignmentType.Rigth;
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTableRow.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTableRow.cs
index 8b7e30a..cda561a 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTableRow.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PDFSimpleTableRow.cs
@@ -13,7 +13,7 @@ namespace PIHelperSh.PdfCreator.Models.TableModels
     public class PDFSimpleTableRow
     {
         /// <summary>
-        /// Элемменты данной стоки
+        /// Элементы данной стоки
         /// </summary>
         public List<string> Items = new List<string>();
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PdfTable.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PdfTable.cs
index 8941931..5812616 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PdfTable.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TableModels/PdfTable.cs
@@ -35,7 +35,7 @@ namespace PIHelperSh.PdfCreator.Models.TableModels
         public PdfStyleType RecordStyle { get; set; } = PdfStyleType.Basic;
 
         /// <summary>
-        /// Выравнивание текста объектов в таблице (по умолчанию - по левой строне)
+        /// Выравнивание текста объектов в таблице (по умолчанию - по левой стороне)
         /// </summary>
         public PdfAlignmentType RecordHorizontalAlignment { get; set; } = PdfAlignmentType.Left;
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfList.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfList.cs
index 17b210e..4ae06ae 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfList.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfList.cs
@@ -1,10 +1,5 @@
 using PIHelperSh.PdfCreator.Enums;
 using PIHelperSh.PdfCreator.Interfaces;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace PIHelperSh.PdfCreator.Models.TextModels
 {
@@ -14,7 +9,7 @@ namespace PIHelperSh.PdfCreator.Models.TextModels
     public class PdfList : IPdfElement
     {
         /// <summary>
-        /// Элементы списка (параграфы или иные спсики)
+        /// Элементы списка (параграфы или иные списки)
         /// </summary>
         public List<IPdfElement> Content { get; set; } = new();
 
diff --git a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfParagraph.cs b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfParagraph.cs
index 60282bd..d3df994 100644
--- a/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfParagraph.cs
+++ b/Cop.Borovkov.Var3/Cop.Borovkov.Var3/PdfCreator/Models/TextModels/PdfParagraph.cs
@@ -24,7 +24,7 @@ namespace PIHelperSh.PdfCreator.Models.TextModels
         public PdfStyleType Style { get; set; } = PdfStyleType.Basic;
 
         /// <summary>
-        /// Выравнивание текста внутри параграфа (по умолчанию - по левой строне)
+        /// Выравнивание текста внутри параграфа (по умолчанию - по левой стороне)
         /// </summary>
         public PdfAlignmentType ParagraphAlignment { get; set; } = PdfAlignmentType.Left;
 
diff --git a/Cop.Borovkov.Var3/Lab4/Forms/Interfaces/IPluginsConvention.cs b/Cop.Borovkov.Var3/Lab4/Forms/Interfaces/IPluginsConvention.cs
new file mode 100644
index 0000000..5046865
--- /dev/null
+++ b/Cop.Borovkov.Var3/Lab4/Forms/Interfaces/IPluginsConvention.cs
@@ -0,0 +1,65 @@
+namespace Lab4.Forms.Interfaces
+{
+    public interface IPluginsConvention
+    {
+        /// <summary>
+        /// Название плагина
+        /// </summary>
+        string PluginName { get; }
+
+        /// <summary>
+        /// Получение контрола для вывода набора данных
+        /// </summary>
+        UserControl GetControl { get; }
+
+        /// <summary>
+        /// Получение элемента, выбранного в контроле
+        /// </summary>
+        PluginsConventionElement GetElement { get; }
+        /// <summary>
+        /// Получение формы для создания/редактирования объекта
+        /// </summary>
+        /// <param name="element"></param>
+        /// <returns></returns>
+        Form GetForm(PluginsConventionElement element);
+        /// <summary>
+        /// Получение формы для работы со справочником
+        /// </summary>
+        /// <returns></returns>
+        Form GetThesaurus();
+
+        /// <summary>
+        /// Удаление элемента
+        /// </summary>
+        /// <param name="element"></param>
+        /// <returns></returns>
+        bool DeleteElement(PluginsConventionElement element);
+
+        /// <summary>
+        /// Обновление набора данных в контроле
+        /// </summary>
+        void ReloadData();
+
+        /// <summary>
+        /// Создание простого документа
+        /// </summary>
+        /// <param name="saveDocument"></param>
+        /// <returns></returns>
+        bool CreateSimpleDocument(PluginsConventionSaveDocument saveDocument);
+
+        /// <summary>
+        /// Создание простого документа
+        /// </summary>
+        /// <param name="saveDocument"></param>
+        /// <returns></returns>
+        bool CreateTableDocument(PluginsConventionSaveDocument saveDocument);
+
+        /// <summary>
+        /// Создание документа с диаграммой
+        /// </summary>
+        /// <param name="saveDocument"></param>
+        /// <returns></returns>
+        bool CreateChartDocument(PluginsConventionSaveDocument saveDocument);
+    }
+
+}
diff --git a/Cop.Borovkov.Var3/Lab4/Lab4.csproj b/Cop.Borovkov.Var3/Lab4/Lab4.csproj
new file mode 100644
index 0000000..663fdb8
--- /dev/null
+++ b/Cop.Borovkov.Var3/Lab4/Lab4.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>
\ No newline at end of file
diff --git a/Cop.Borovkov.Var3/Lab4/Models/PluginsConventionElement.cs b/Cop.Borovkov.Var3/Lab4/Models/PluginsConventionElement.cs
new file mode 100644
index 0000000..c5b9472
--- /dev/null
+++ b/Cop.Borovkov.Var3/Lab4/Models/PluginsConventionElement.cs
@@ -0,0 +1,7 @@
+namespace Lab4.Models
+{
+    public class PluginsConventionElement
+    {
+        public Guid Id { get; set; }
+    }
+}
diff --git a/Cop.Borovkov.Var3/Lab4/Program.cs b/Cop.Borovkov.Var3/Lab4/Program.cs
new file mode 100644
index 0000000..6270a9b
--- /dev/null
+++ b/Cop.Borovkov.Var3/Lab4/Program.cs
@@ -0,0 +1,17 @@
+namespace Lab4
+{
+    internal static class Program
+    {
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            // To customize application configuration such as set high DPI settings or default font,
+            // see https://aka.ms/applicationconfiguration.
+            ApplicationConfiguration.Initialize();
+            Application.Run(new Form1());
+        }
+    }
+}
\ No newline at end of file