Section 9--521. Uniform  Form of Written Financing Statement; Amendment;
                    and Cooperative Addendum.
    (a) Initial financing statement form. A  filing  office  that  accepts
  written  records  may  not  refuse to accept a written initial financing
  statement in the form promulgated by the department of state except  for
  a reason as set forth in Section 9--516(b).
    (b) Amendment  form.  A filing office that accepts written records may
  not refuse to accept a written financing statement amendment in the form
  promulgated by the department of state except for a reason as set  forth
  in Section 9--516 (b).
    (c) Cooperative  addendum  form.  A filing office that accepts written
  records may not refuse to accept a written cooperative addendum  in  the
  form  promulgated  by the department of state except for a reason as set
  forth in Section 9--516 (b).