The use of the <unitloc> tag for containers such as boxes is somewhat confusing and slightly unwieldy. In the description of this element it is stated that it is used for two separate and distinct purposes: "to identify the location of the material by the number assigned to the containers, boxes, folders, etc., in which it is arranged; and to identify the physical location of the material by the number of the stack, shelf, or other location where the material is stored." To avoid confusion, I think it would be of use to clearly define the distinction between physical location of a collection and how the collection is stored. <UNITLOC> should only be used to indicate where a collection or item is physically located. A new tag such as <CONTAINER> with attributed/labels such a "Box," "Folder," etc. would be used to indicate in what manner the material is physically stored. Such a tag system would eliminate the need to apply multiple attributes to the <UNITLOC> tag. I will not even attempt to delve into the philosophical aspects of what a box or folder is within a processed collection and its associated finding aid. Also, it would be useful in the Tag Library to indicate clearly when an element is a "floating" element or Phrase-Level Element. I know it is clearly described in the frontmatter of the Tag Library, but I would like to see it in the actual description of the Tag. Patrick T. Lawlor Rare Book and Manuscript Library Columbia University