MicrosoftDocs · ghogen · Jan 4, 2021 · Dec 17, 2020 · Dec 18, 2020 · Dec 18, 2020
diff --git a/docs/extensibility/message-enumerator.md b/docs/extensibility/message-enumerator.md
@@ -1,5 +1,7 @@
 ---
 title: Message Enumerator | Microsoft Docs
+description: The members of this enumerator are used for the TEXTOUTPROC function, which is a callback function that the IDE provides when it calls the SccOpenProject.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/migrate-debugger-com-registration.md b/docs/extensibility/migrate-debugger-com-registration.md
@@ -1,5 +1,7 @@
 ---
 title: "Migrate 64-bit debugger COM class registration| Microsoft Docs"
+description: Learn how to register COM classes to msvsmon for debugger extensions without writing to HKEY_CLASSES_ROOT. 
+ms.custom: SEO-VS-2020
 ms.date: "11/10/2016"
 ms.topic: "conceptual"
 ms.assetid: 45cfcee6-7a68-4d4f-b3f6-e2d8a0fa066a

diff --git a/docs/extensibility/mssccprj-scc-file.md b/docs/extensibility/mssccprj-scc-file.md
@@ -1,5 +1,7 @@
 ---
 title: MSSCCPRJ.SCC File | Microsoft Docs
+description: Learn about the MSSCCPRJ.SCC file, which is a local, client-side file used by the Source Control plug-in, which works with the Visual Studio SDK.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/ngen-support.md b/docs/extensibility/ngen-support.md
@@ -1,5 +1,7 @@
 ---
 title: Ngen support in VSIX v3 | Microsoft Docs
+description: Learn how to enable Native Image Generator, which is a tool that extension developers can use to improve the performance of managed applications.
+ms.custom: SEO-VS-2020
 ms.date: 11/09/2016
 ms.topic: conceptual
 ms.assetid: 1472e884-c74e-4c23-9d4a-6d8bdcac043b

diff --git a/docs/extensibility/nuget-versus-sdk-references.md b/docs/extensibility/nuget-versus-sdk-references.md
@@ -1,5 +1,7 @@
 ---
 title: Adding References Using NuGet Versus an Extension SDK
+description: Learn about the differences between packaging software as a NuGet package or as a software development kit when referenced in a Visual Studio project.
+ms.custom: SEO-VS-2020
 ms.date: 08/02/2019
 ms.topic: conceptual
 author: acangialosi

diff --git a/docs/extensibility/objects.md b/docs/extensibility/objects.md
@@ -1,5 +1,7 @@
 ---
 title: Objects | Microsoft Docs
+description: The articles in this section provide reference information about objects that are used to create an instance of the core text editor in the Visual Studio SDK.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/open-folder.md b/docs/extensibility/open-folder.md
@@ -1,5 +1,7 @@
 ---
 title: "Visual Studio Open Folder extensibility overview | Microsoft Docs"
+description: Learn about extensibility for the Open Folder feature, which allows users to open a codebase in Visual Studio without project or solution files.
+ms.custom: SEO-VS-2020
 ms.date: "02/21/2018"
 ms.topic: overview
 ms.assetid: 94c3f8bf-1de3-40ea-aded-7f40c4b314c7

diff --git a/docs/extensibility/opening-a-dynamic-tool-window.md b/docs/extensibility/opening-a-dynamic-tool-window.md
@@ -1,5 +1,7 @@
 ---
 title: Opening a Dynamic Tool Window | Microsoft Docs
+description: Learn about dynamic tool windows, which opens whenever a specific UI context applies and closes when the UI context no longer applies.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: how-to
 helpviewer_keywords:

diff --git a/docs/extensibility/optnamechangepfn.md b/docs/extensibility/optnamechangepfn.md
@@ -1,5 +1,7 @@
 ---
 title: OPTNAMECHANGEPFN | Microsoft Docs
+description: Learn about the OPTNAMECHANGEPFN callback function, which communicates name changes from the source control plug-in to the Visual Studio IDE.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/parent-element.md b/docs/extensibility/parent-element.md
@@ -1,5 +1,7 @@
 ---
 title: Parent Element | Microsoft Docs
+description: The Parent element specifies that an element is a parent of a button, combo box, menu, or group.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/persisting-the-property-of-a-project-item.md b/docs/extensibility/persisting-the-property-of-a-project-item.md
@@ -1,5 +1,7 @@
 ---
 title: Persisting the Property of a Project Item | Microsoft Docs
+description: Learn how to persist a property that you add to a project item by storing the property in the project file in your extended project type.
+ms.custom: SEO-VS-2020
 ms.date: 03/22/2018
 ms.topic: how-to
 helpviewer_keywords:

diff --git a/docs/extensibility/popdirlistfunc.md b/docs/extensibility/popdirlistfunc.md
@@ -1,5 +1,7 @@
 ---
 title: POPDIRLISTFUNC | Microsoft Docs
+description: Learn about the POPDIRLISTFUNC callback function, which is passed to update directories to find out which are under source control.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/poplistfunc.md b/docs/extensibility/poplistfunc.md
@@ -1,5 +1,7 @@
 ---
 title: POPLISTFUNC | Microsoft Docs
+description: Learn about the POPLISTFUNC callback function, which is used by the source control plug-in to update a list of files or directories.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/preparing-extensions-for-windows-installer-deployment.md b/docs/extensibility/preparing-extensions-for-windows-installer-deployment.md
@@ -1,5 +1,7 @@
 ---
 title: Preparing Extensions for Windows Installer Deployment | Microsoft Docs
+description: Learn how to prepare a project whose default output is a VSIX package for inclusion in a Setup project.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: how-to
 helpviewer_keywords:

diff --git a/docs/extensibility/private-galleries.md b/docs/extensibility/private-galleries.md
@@ -1,5 +1,7 @@
 ---
 title: Private Galleries | Microsoft Docs
+description: Learn how to share the controls, templates, and tools that you develop in the Visual Studio SDK by posting them to a private gallery.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/querychangesfunc.md b/docs/extensibility/querychangesfunc.md
@@ -1,5 +1,7 @@
 ---
 title: QUERYCHANGESFUNC | Microsoft Docs
+description: The QUERYCHANGESFUNC callback function is used to enumerate a collection of file names and determine the status of each file.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/registering-a-tool-window.md b/docs/extensibility/registering-a-tool-window.md
@@ -1,5 +1,7 @@
 ---
 title: Registering a Tool Window | Microsoft Docs
+description: Learn how you can register your tool windows with Visual Studio using ProvideToolWindowAttribute and ProvideToolWindowVisibilityAttribute.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/registering-and-unregistering-vspackages.md b/docs/extensibility/registering-and-unregistering-vspackages.md
@@ -1,5 +1,7 @@
 ---
 title: Registering and Unregistering VSPackages | Microsoft Docs
+description: Learn about registering and unregistering your VSPackages, including the attributes you use and the .pkgdef file.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/.../extensibility/registering-file-name-extensions-for-side-by-side-deployments.md b/.../extensibility/registering-file-name-extensions-for-side-by-side-deployments.md
@@ -1,5 +1,6 @@
 ---
 title: Register filename extensions for side-by-side IDEs
+description: Learn about registering file name extensions for side-by-side deployments, which allows users to open files in the appropriate version of Visual Studio.
 ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual

diff --git a/docs/extensibility/registering-verbs-for-file-name-extensions.md b/docs/extensibility/registering-verbs-for-file-name-extensions.md
@@ -1,5 +1,7 @@
 ---
 title: Registering Verbs for File Name Extensions | Microsoft Docs
+description: Learn how to register a verb that is associated with a programmatic identifier for a file name extension by using a Shell key.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/ux-guidelines/evaluation-tools-for-visual-studio.md b/docs/extensibility/ux-guidelines/evaluation-tools-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: Evaluation Tools for Visual Studio | Microsoft Docs
+description: Use this checklist to evaluate user experience quality for visual and interaction details for new features you design for Visual Studio.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 ms.assetid: 94e0e9a3-440c-4943-ad7b-772ed742e034

diff --git a/docs/extensibility/ux-guidelines/fonts-and-formatting-for-visual-studio.md b/docs/extensibility/ux-guidelines/fonts-and-formatting-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: Fonts and Formatting for Visual Studio | Microsoft Docs
+description: Learn about fonts and formatting for new features you design for Visual Studio, including how to use the environment font.
+ms.custom: SEO-VS-2020
 ms.date: 04/26/2017
 ms.topic: conceptual
 ms.assetid: c3c3df69-83b4-4fd0-b5b1-e18c33f39376

diff --git a/docs/extensibility/ux-guidelines/interaction-patterns-for-visual-studio.md b/docs/extensibility/ux-guidelines/interaction-patterns-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: Interaction Patterns for Visual Studio | Microsoft Docs
+description: Learn about the library of common interaction patterns that you can use when building new features for Visual Studio.
+ms.custom: SEO-VS-2020
 ms.date: 05/13/2020
 ms.topic: conceptual
 ms.assetid: a3643792-b0df-481c-bc35-576f948e04cf

diff --git a/docs/extensibility/ux-guidelines/layout-for-visual-studio.md b/docs/extensibility/ux-guidelines/layout-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: Layout for Visual Studio | Microsoft Docs
+description: Learn about layout for Visual Studio dialogs, including unthemed dialogs and new dialogs that have a themed appearance. 
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 ms.assetid: c19e3022-047c-43b6-a046-a82717efed4f

diff --git a/docs/extensibility/ux-guidelines/menus-and-commands-for-visual-studio.md b/docs/extensibility/ux-guidelines/menus-and-commands-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: Menus and Commands for Visual Studio | Microsoft Docs
+description: Learn how command bars allow for flexibility in the user interface when you create new features for Visual Studio.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 ms.assetid: 0a1ed675-2bd1-4603-ba3a-f40dfb5cfb69

diff --git a/docs/extensibility/ux-guidelines/notifications-and-progress-for-visual-studio.md b/docs/extensibility/ux-guidelines/notifications-and-progress-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: Notifications and Progress for Visual Studio | Microsoft Docs
+description: Learn about several ways to inform users what is happening in Visual Studio regarding their software development tasks.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 ms.assetid: f0ef65e9-0f1f-45f4-9f25-6e2398691168

diff --git a/docs/extensibility/ux-guidelines/ux-essentials-for-visual-studio.md b/docs/extensibility/ux-guidelines/ux-essentials-for-visual-studio.md
@@ -1,5 +1,7 @@
 ---
 title: UX Essentials for Visual Studio | Microsoft Docs
+description: Review these user experience best practices for new features you develop for Visual Studio, including knowing about screen resolution.
+ms.custom: SEO-VS-2020
 ms.date: 04/26/2017
 ms.topic: conceptual
 ms.assetid: a793cf7a-f230-43ce-88d0-fa5d6f1aa9c7

diff --git a/docs/extensibility/ux-guidelines/visual-studio-user-experience-guidelines.md b/docs/extensibility/ux-guidelines/visual-studio-user-experience-guidelines.md
@@ -1,5 +1,7 @@
 ---
 title: Visual Studio User Experience Guidelines | Microsoft Docs
+description: The Visual Studio User Experience Guidelines contain common user models and interaction patterns to help create consistent user experiences for new features.
+ms.custom: SEO-VS-2020
 ms.date: 10/05/2018
 ms.topic: conceptual
 ms.assetid: 3abbe495-cbbc-4982-a809-38bda34553a7

diff --git a/docs/extensibility/verifying-subtypes-of-a-project-at-run-time.md b/docs/extensibility/verifying-subtypes-of-a-project-at-run-time.md
@@ -1,5 +1,7 @@
 ---
 title: Verifying Subtypes of a Project at Run Time | Microsoft Docs
+description: Learn how to have your VSPackage verify the presence of a specified custom project subtype that it depends on.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/visibilityconstraints-element.md b/docs/extensibility/visibilityconstraints-element.md
@@ -1,5 +1,7 @@
 ---
 title: VisibilityConstraints Element | Microsoft Docs
+description: The VisibilityConstraints element determines the static visibility of groups of commands and toolbars.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/visibilityitem-element.md b/docs/extensibility/visibilityitem-element.md
@@ -1,5 +1,7 @@
 ---
 title: VisibilityItem Element | Microsoft Docs
+description: The VisibilityItem element determines the static visibility of commands and toolbars. Entries identify a command or menu, and an associated command UI context.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/visual-studio-sdk-glossary.md b/docs/extensibility/visual-studio-sdk-glossary.md
@@ -1,5 +1,7 @@
 ---
 title: Visual Studio SDK Glossary | Microsoft Docs
+description: This glossary provides definitions for terms that are used in the Visual Studio SDK documentation.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/visual-studio-sdk-reference.md b/docs/extensibility/visual-studio-sdk-reference.md
@@ -1,5 +1,7 @@
 ---
 title: Visual Studio SDK Reference | Microsoft Docs
+description: These articles contain information about Visual Studio namespaces, related namespaces, and other areas of interest for developers who use the Visual Studio SDK.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/visual-studio-sdk.md b/docs/extensibility/visual-studio-sdk.md
@@ -1,5 +1,7 @@
 ---
 title: Visual Studio SDK | Microsoft Docs
+description: The Visual Studio SDK helps you extend features or add new features to Visual Studio. Learn about some of the ways in which you can extend Visual Studio.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/visual-studio-template-manifest-schema-reference.md b/docs/extensibility/visual-studio-template-manifest-schema-reference.md
@@ -1,5 +1,7 @@
 ---
 title: Visual Studio Template Manifest Schema Reference | Microsoft Docs
+description: This schema reference describes the format of the Visual Studio template manifest files that are generated for Visual Studio project or item templates.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 ms.assetid: bc7d0a81-0df5-41a9-a912-1b30e5da1d13

diff --git a/docs/extensibility/vscodewindow-object.md b/docs/extensibility/vscodewindow-object.md
@@ -1,5 +1,7 @@
 ---
 title: VSCodeWindow Object | Microsoft Docs
+description: Learn about code windows, which are specialized document windows that can include one or more text views, usually the VsTextView object.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/vscodewindowmanager-object.md b/docs/extensibility/vscodewindowmanager-object.md
@@ -1,5 +1,7 @@
 ---
 title: VSCodeWindowManager Object | Microsoft Docs
+description: Learn about the VSCodeWindowManager object, which is responsible for managing adornments, for example, the drop-down bar.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/vsct-xml-schema-conditional-attributes.md b/docs/extensibility/vsct-xml-schema-conditional-attributes.md
@@ -1,5 +1,7 @@
 ---
 title: VSCT XML Schema Conditional Attributes | Microsoft Docs
+description: Learn how to apply conditional attributes to VSCT XML schema lists and items. Attributes evaluate to true or false, controlling the resulting output.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/vsct-xml-schema-reference.md b/docs/extensibility/vsct-xml-schema-reference.md
@@ -1,5 +1,7 @@
 ---
 title: VSCT XML Schema Reference | Microsoft Docs
+description: The VSCT XML schema reference articles describe Command Table Compiler schema elements, with allowed child elements and attributes for each.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/vsix-extension-schema-2-0-reference.md b/docs/extensibility/vsix-extension-schema-2-0-reference.md
@@ -1,5 +1,7 @@
 ---
 title: VSIX Extension Schema 2.0 Reference | Microsoft Docs
+description: The VSIX extension schema 2.0 defines the file format for a VSIX deployment manifest file, which describes the contents of a VSIX package.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/vsix-language-pack-schema-2-0-reference.md b/docs/extensibility/vsix-language-pack-schema-2-0-reference.md
@@ -1,5 +1,7 @@
 ---
 title: "VSIX Language Pack Schema 2.0 Reference | Microsoft Docs"
+description: The VSIX Language Pack schema provides localized installation information for VSIX packages. Version 2.0 supports additional localization elements.
+ms.custom: SEO-VS-2020
 ms.date: "10/26/2017"
 ms.topic: "conceptual"
 helpviewer_keywords:

diff --git a/docs/extensibility/vsix-manifest-designer.md b/docs/extensibility/vsix-manifest-designer.md
@@ -1,5 +1,7 @@
 ---
 title: VSIX Manifest Designer | Microsoft Docs
+description: Learn how the VSIX Manifest Designer modifies a VSIX package manifest file, which sets the installation behavior for a Visual Studio extension.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/vsix-project-template.md b/docs/extensibility/vsix-project-template.md
@@ -1,5 +1,7 @@
 ---
 title: VSIX Project Template | Microsoft Docs
+description: Learn how to use the VSIX Project template to wrap Visual Studio extensions in a VSIX project, and then publish the package on the Visual Studio Marketplace.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/vstextbuffer-object.md b/docs/extensibility/vstextbuffer-object.md
@@ -1,5 +1,7 @@
 ---
 title: VSTextBuffer Object | Microsoft Docs
+description: The VSTextBuffer object represents a stream of Unicode text, which is generally associated with a file. This article lists the interfaces of VSTextBuffer.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/docs/extensibility/vstextview-object.md b/docs/extensibility/vstextview-object.md
@@ -1,5 +1,7 @@
 ---
 title: VSTextView Object | Microsoft Docs
+description: The VSTextView object is a window that lets users view and edit the Unicode text of the text buffer. 
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: conceptual
 f1_keywords:

diff --git a/.../extensibility/walkthrough-accessing-the-dte-object-from-an-editor-extension.md b/.../extensibility/walkthrough-accessing-the-dte-object-from-an-editor-extension.md
@@ -1,5 +1,7 @@
 ---
 title: Access the DTE Object from an editor extension
+description: Learn how to access the DTE object from an editor extension by using the code example in this walkthrough.
+ms.custom: SEO-VS-2020
 ms.date: 04/24/2019
 ms.topic: conceptual
 helpviewer_keywords:

diff --git a/docs/extensibility/walkthrough-adding-custom-xaml-to-the-start-page.md b/docs/extensibility/walkthrough-adding-custom-xaml-to-the-start-page.md
@@ -1,5 +1,7 @@
 ---
 title: 'Walkthrough: Adding Custom XAML to the Start Page | Microsoft Docs'
+description: Learn how to create a custom Visual Studio start page that contains a web browser by using this walkthrough.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: how-to
 helpviewer_keywords:

diff --git a/docs/extensibility/walkthrough-adding-features-to-a-custom-editor.md b/docs/extensibility/walkthrough-adding-features-to-a-custom-editor.md
@@ -1,5 +1,7 @@
 ---
 title: 'Walkthrough: Adding Features to a Custom Editor | Microsoft Docs'
+description: Learn how to add more features to a custom editor after you create the editor by using this walkthrough.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: how-to
 helpviewer_keywords:

diff --git a/docs/extensibility/walkthrough-creating-a-custom-editor.md b/docs/extensibility/walkthrough-creating-a-custom-editor.md
@@ -1,5 +1,7 @@
 ---
 title: 'Walkthrough: Creating a Custom Editor | Microsoft Docs'
+description: Learn how to the VSPackage project template can create a simple custom editor in C++ by using this walkthrough.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: how-to
 helpviewer_keywords:

diff --git a/docs/extensibility/walkthrough-creating-a-margin-glyph.md b/docs/extensibility/walkthrough-creating-a-margin-glyph.md
@@ -1,5 +1,7 @@
 ---
 title: 'Walkthrough: Creating a Margin Glyph | Microsoft Docs'
+description: Learn how to customize the appearance of editor margins by using custom editor extensions by using this walkthrough.
+ms.custom: SEO-VS-2020
 ms.date: 11/04/2016
 ms.topic: how-to
 helpviewer_keywords: