VMS Help FORTRAN, Intrinsic Procedures, IOR  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  IOR (integer, integer)

  A function that performs a logical OR of the arguments on a bit by
  bit basis (bitwise inclusive OR).
  +------+---------+----------+------------+-------------+
  | Args | Generic | Specific |  Argument  | Result Type |
  +------+---------+----------+------------+-------------+
  |  2   |  IOR    | IIOR     | INTEGER*2  | INTEGER*2   |
  |      |         | JIOR     | INTEGER*4  | INTEGER*4   |
  +------+---------+----------+------------+-------------+