Vector objects are stacked one on top of the other in the order in which they were created. The first object created is situated at the bottom of the stacking order and the most recently created sits at the top. Visibility of objects in the stacking order is an issue. The object at the top of the stacking order is completely visible whereas the bottom-most object is obscured by anything that sits on top of it.  What do we do if we decide that we want to move the object on the bottom to the top of the stacking order? Firework’s Arrangement Tools allow you to shuffle vector objects around in the stacking order. 

You have four arrangement options for a selected object. You can "Bring to Front" which will take your object from wherever it is in the stacking order and bring it to the very front. You can also "Bring Forward" which will move your object one position higher in the stacking order. You can "Send Backward" which will move your object one position backward in the stacking order or you can choose "Send to Back" which will place it at the very bottom of the stacking order.

Using these tools allows you to place your vector shapes exactly where you want them no matter when they were created or where they’re situated.