diff --git a/core/src/processing/core/PConstants.java b/core/src/processing/core/PConstants.java
index 021a79455..f4030bb7e 100644
--- a/core/src/processing/core/PConstants.java
+++ b/core/src/processing/core/PConstants.java
@@ -108,8 +108,9 @@ public interface PConstants {
    *
    * ( end auto-generated )
    * @webref constants
-   * @see PConstants#HALF_PI
    * @see PConstants#TWO_PI
+   * @see PConstants#TAU
+   * @see PConstants#HALF_PI
    * @see PConstants#QUARTER_PI
    *
    */
@@ -126,6 +127,7 @@ public interface PConstants {
    * @webref constants
    * @see PConstants#PI
    * @see PConstants#TWO_PI
+   * @see PConstants#TAU
    * @see PConstants#QUARTER_PI
    */
   static final float HALF_PI = (float) (Math.PI / 2.0);
@@ -142,6 +144,7 @@ public interface PConstants {
    * @webref constants
    * @see PConstants#PI
    * @see PConstants#TWO_PI
+   * @see PConstants#TAU
    * @see PConstants#HALF_PI
    */
   static final float QUARTER_PI = (float) (Math.PI / 4.0);
@@ -156,11 +159,26 @@ public interface PConstants {
    * ( end auto-generated )
    * @webref constants
    * @see PConstants#PI
+   * @see PConstants#TAU
    * @see PConstants#HALF_PI
    * @see PConstants#QUARTER_PI
    */
   static final float TWO_PI = (float) (2.0 * Math.PI);
-
+  /**
+   * ( begin auto-generated from TAU.xml )
+   *
+   * TAU is an alias for TWO_PI, a mathematical constant with the value
+   * 6.28318530717958647693. It is twice the ratio of the circumference
+   * of a circle to its diameter. It is useful in combination with the
+   * trigonometric functions <b>sin()</b> and <b>cos()</b>.
+   *
+   * ( end auto-generated )
+   * @webref constants
+   * @see PConstants#PI
+   * @see PConstants#TWO_PI
+   * @see PConstants#HALF_PI
+   * @see PConstants#QUARTER_PI
+   */
   static final float TAU = (float) (2.0 * Math.PI);
 
   static final float DEG_TO_RAD = PI/180.0f;