You can also access extra properties on a root project from a subproject using the following syntax:

.my-sub-project/build.gradle.kts
[source,kotlin]
----
val myNewProperty: String by rootProject.extra  // <1>
----
<1> Binds the root project's `myNewProperty` extra property to a reference of the same name

Extra properties aren't just limited to projects.

 * <li>The <code>Project</code> object itself. This scope includes any property getters and setters declared by the
 * <code>Project</code> implementation class.  For example, {@link #getRootProject()} is accessible as the
 * <code>rootProject</code> property.  The properties of this scope are readable or writable depending on the presence
 * of the corresponding getter or setter method.</li>
 *