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diff --git a/junit4/src/main/java/org/junit/Rule.java b/junit4/src/main/java/org/junit/Rule.java
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+++ b/junit4/src/main/java/org/junit/Rule.java
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+package org.junit;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotates fields that contain rules. Such a field must be public, not
+ * static, and a subtype of {@link org.junit.rules.TestRule}.  
+ * The {@link org.junit.runners.model.Statement} passed 
+ * to the {@link org.junit.rules.TestRule} will run any {@link Before} methods, 
+ * then the {@link Test} method, and finally any {@link After} methods,
+ * throwing an exception if any of these fail.  If there are multiple
+ * annotated {@link Rule}s on a class, they will be applied in an order
+ * that depends on your JVM's implementation of the reflection API, which is
+ * undefined, in general.
+ *
+ * For example, here is a test class that creates a temporary folder before
+ * each test method, and deletes it after each:
+ *
+ * <pre>
+ * public static class HasTempFolder {
+ * 	&#064;Rule
+ * 	public TemporaryFolder folder= new TemporaryFolder();
+ * 
+ * 	&#064;Test
+ * 	public void testUsingTempFolder() throws IOException {
+ * 		File createdFile= folder.newFile(&quot;myfile.txt&quot;);
+ * 		File createdFolder= folder.newFolder(&quot;subfolder&quot;);
+ * 		// ...
+ * 	}
+ * }
+ * </pre>
+ * 
+ * For more information and more examples, see 
+ * {@link org.junit.rules.TestRule}. 
+ *
+ * Note: for backwards compatibility, this annotation may also mark
+ * fields of type {@link org.junit.rules.MethodRule}, which will be honored.  However,
+ * this is a deprecated interface and feature.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD})
+public @interface Rule {
+
+}
+\ No newline at end of file