diff --git a/primitiveCollections/src/main/java/org/lucares/collections/IntList.java b/primitiveCollections/src/main/java/org/lucares/collections/IntList.java
index 2353816..731997b 100644
--- a/primitiveCollections/src/main/java/org/lucares/collections/IntList.java
+++ b/primitiveCollections/src/main/java/org/lucares/collections/IntList.java
@@ -11,6 +11,22 @@ import java.util.List;
  */
 public class IntList {
 
+	// TODO make Serializable
+	// TODO make Cloneable
+	// TODO support Iterator
+	// TODO add mod counts
+	// TODO support sublists
+	// TODO support Stream-API
+	// TODO add retainAll
+	// TODO add removeAll
+	// TODO add removeIf
+	// TODO add removeRange
+	// TODO add replace
+	// TODO add lastIndexOf
+	// TODO add indexOf
+	// TODO add toArray(int[] a)
+	// TODO remove bounds checks that are handled by java, e.g. negative indices
+
 	private static final int DEFAULT_CAPACITY = 10;
 
 	/**
@@ -96,6 +112,8 @@ public class IntList {
 	 *            the value to add
 	 */
 	public void add(final int value) {
+		// TODO add a special implementation that does not
+		// need to allocate an array for the varargs of addAll
 		addAll(value);
 	}