Preparing for Timeline

v3/src/tween/ReservedProps.js

@@ -8,7 +8,7 @@
 //  hold: The time the tween will pause before running a yoyo
 //  loop: The time the tween will pause before starting either a yoyo or returning to the start for a repeat
 //  loopDelay: 
-//  offset: 
+//  offset: Used when the Tween is part of a Timeline
 //  paused: Does the tween start in a paused state, or playing?
 //  props: The properties being tweened by the tween
 //  repeat: The number of times the tween will repeat itself (a value of 1 means the tween will play twice, as it repeated once)

v3/src/tween/Tween.js

@@ -41,6 +41,9 @@ var Tween = new Class({
         //  Countdown timer (used by loopDelay and completeDelay)
         this.countdown = 0;
 
+        //  Set only if this Tween is part of a Timeline. Controls the offset from the start time of the Timeline.
+        this.offset = 0;
+
         //  The current state of the tween
         this.state = TWEEN_CONST.PENDING_ADD;