Abstract: In a preferred embodiment, an upright divider and support element is provided by an elongated wire backing having attached to the top wire a metal index tab adapted to carry a securely-held insert for noting data thereon pertaining to whatever is stored in various folders or files supported by the elongated wire backing which wire backing has an integral and continuous wire base forming centrally thereof and spaced-away from the upright divider and support element, a wire portion forming a downwardly-extending U-shaped structure which is inserted through an opening in a base plate structure, and locked when inserted through the opening, by a pin key or pin locking-element inserted through the U-shaped structure beneath the underside of the plate structure.