When working with an SL4 or any label type that has a spine and pocket label, allow for alignment to vary between the spine portion and pocket portion. This is important for how we label our picture books. We center align the first 3 letters (with linebreaks) of the author's name. Setting alignment to center also center aligns the pocket label. Attempting to manually adjust spacing by using spaces in left alignment is not ideal with letters like "I" not really being centered. See below:

Center alignment issue:

S
I
U

In any additional attention towards allowing flexibility with rules on label type would be appreciated. For example, having a profile or label tpye that could take parts of a field on an item record and apply a set of rules to it before outputting the data. As previously mentioned, our picture books have spine labels that are the first 3 letters of the author's name with linebreaks in between each letter, centered. So ideally the rules would be to take the item level classification field data and manipulate it as such for a book by Dr. Seuss with the classification field having SEUSS:

S
E
U

Labeling children's materials like so is important for our young readers in locating materials and keeping them organized.