Update Start layout XML and Taskbar XSD

windows/configuration/taskbar/toc.yml

@@ -2,4 +2,6 @@ items:
 - name: Customize the Taskbar
   href: index.md
 - name: Supported Taskbar CSPs
-  href: policy-settings.md
+  href: policy-settings.md
+- name: XML schema definition (XSD)
+  href: xsd.md

windows/configuration/taskbar/xsd.md

@@ -0,0 +1,66 @@
+---
+title: Taskbar XML Schema Definition (XSD)
+description: Taskbar XSD reference article.
+ms.topic: reference
+ms.date: 02/15/2024
+---
+
+# Taskbar XML Schema Definition (XSD)
+
+```xml
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+            xmlns:local="http://schemas.microsoft.com/Start/2014/TaskbarLayout"
+            targetNamespace="http://schemas.microsoft.com/Start/2014/TaskbarLayout"
+            elementFormDefault="qualified">
+
+    <xsd:complexType name="ct_PinnedUWA">
+        <xsd:attribute name="AppUserModelID" type="xsd:string" />
+    </xsd:complexType>
+
+    <xsd:complexType name="ct_PinnedDesktopApp">
+        <xsd:attribute name="DesktopApplicationID" type="xsd:string" />
+        <xsd:attribute name="DesktopApplicationLinkPath" type="xsd:string" />
+    </xsd:complexType>
+
+    <xsd:complexType name="ct_TaskbarSecondaryTile">
+        <xsd:attribute name="AppUserModelID" type="xsd:string" use="required"/>
+        <xsd:attribute name="TileID" type="xsd:string" use="required"/>
+        <xsd:attribute name="Arguments" type="xsd:string" use="required"/>
+        <xsd:attribute name="DisplayName" type="xsd:string" use="required"/>
+        <xsd:attribute name="Square150x150LogoUri" type="xsd:string" use="required"/>
+        <xsd:attribute name="Wide310x150LogoUri" type="xsd:string" use="optional"/>
+    </xsd:complexType>
+
+    <xsd:complexType name="ct_TaskbarPinList">
+        <xsd:sequence>
+            <xsd:choice minOccurs="0" maxOccurs="unbounded">
+                <xsd:element name="UWA" type="local:ct_PinnedUWA" />
+                <xsd:element name="DesktopApp" type="local:ct_PinnedDesktopApp" />
+                <xsd:element name="SecondaryTile" type="local:ct_TaskbarSecondaryTile" />
+            </xsd:choice>
+        </xsd:sequence>
+        <xsd:attribute name="Region" type="xsd:string" use="optional" />
+    </xsd:complexType>
+
+    <xsd:simpleType name="st_TaskbarPinListPlacement">
+        <xsd:restriction base="xsd:string">
+            <xsd:enumeration value="Append" />
+            <xsd:enumeration value="Replace" />
+        </xsd:restriction>
+    </xsd:simpleType>
+
+    <xsd:attributeGroup name="ag_SelectionAttributes">
+        <xsd:attribute name="SKU" type="xsd:string" use="optional"/>
+        <xsd:attribute name="Region" type="xsd:string" use="optional"/>
+    </xsd:attributeGroup>
+
+    <xsd:complexType name="ct_TaskbarLayout">
+        <xsd:sequence>
+            <xsd:element name="TaskbarPinList" type="local:ct_TaskbarPinList" minOccurs="1" maxOccurs="1" />
+        </xsd:sequence>
+        <xsd:attributeGroup ref="local:ag_SelectionAttributes"/>
+    </xsd:complexType>
+
+</xsd:schema>
+```