Z-index
What is Z-indexing anyway?
Z-indexing is to move elements in the z-axis , what that means is that you can move an element to the front or to the back of another elements. Think of a pile of books, placed vertically, the 1st one at the bottom, the 2nd one on top the 1st one, the 3rd one on top of the 2nd one and so on. Now you want to move, say, the 8th book below the 7th book. So you need to change the z-indexing. In Belltech Label Maker With Data Merge, the elements are placed in the same way and each element has a unique z-index in the stacking order.
You can change the stacking level of any element, as you can do to the pile of books. The commands Move to Front/Back/One Step Front/One Step Back help you change the stacking order, as described below.

Move to Front/Back/One Step Front/One Step Back:
Select the element, right-click on it, a popup menu appears, select "Move To->Front" or "Move To->Back" etc. as desired(as shown).

Move To->Front : moves the element totally on top of all other elements.
Move To->Back : moves the element totally at the bottom of all other elements.
Move To->One Step Front : moves the element just above the element which is on top of it.
Move To->One Step Back : moves the element just below the element which is just behind it.
Usage:
For example, you have put some text element, and then you have created a picture element. Now you want to overlay the picture element with the text. You moved the text over to the picture, and saw that the text is hiding behind the picture element. What to do? Right-click on the picture and select menu "Move To->Back".