Here are entered works on books that are produced by artists and intended as visual art objects. Actual specimens of such books are entered under Artists' books--Specimens, a form heading assigned without geographic subdivision. Works on books illustrated with original prints by well known artists and published in limited editions are entered under Artists' illustrated books. Works on existing books whose pages have been altered by paint, collage, or other media are entered under Altered books. Works on custom bindings of books, irrespective of contents, are entered under Fine bindings.
Here are entered works on art in social or public spaces that does not provide guidance on whether viewer participation is involved. Works on art that requires or invites viewer participation, or that provides the elements from which the viewer creates a work of art, are entered under Interactive art.