Add documentation

Author: award999

userdocs/userdocs.docc/Articles/Features/automatic-task-creation.md

@@ -5,9 +5,17 @@ Add tasks for common operations with your Package.
 For workspaces that contain a `Package.swift` file, the Swift extension adds the following tasks:
 
 - **Build All**: Build all targets in the Package.
-- **Build Debug <Executable>**: Each executable in a Package.swift get a task for building a debug build.
-- **Build Release <Executable>**: Each executable in a Package.swift get a task for building a release build.
+- **Build Debug \<Executable\>**: Each executable product in a Package.swift get a task for building a debug build.
+- **Build Release \<Executable\>**: Each executable product in a Package.swift get a task for building a release build.
 
 > 💡 Tip: Tasks use workflows common to all VS Code extensions. For more information see [the VS Code documentation for tasks](https://code.visualstudio.com/docs/editor/tasks).
 
 These tasks are available via the commands **Terminal ▸ Run Task...** and **Terminal ▸ Run Build Task...** in the command palette.
+
+## Create tasks for library targets
+
+By default build tasks are only automatically created for executable products. If you set the `swift.createTasksForLibraryProducts` setting to true, then additional tasks will be created:
+- **Build Debug \<Library\>**: Each library product in a Package.swift get a task for building a debug build.
+- **Build Release \<Library\>**: Each library product in a Package.swift get a task for building a release build.
+
+> ⚠️ Important: Tasks will not be created for automatic library products, as you cannot specify a `--product` option for automatic products when building.