An array element is one of the scalar data items that make up an
  array.  A subscript list (appended to the array or array component)
  determines which element is being referred to.  A reference to an
  array element takes the following form:

    array [(s-list)]

      array   Is the name of an array.

      s-list  Is a list of one or more subscripts. The
              number of subscripts must equal the rank of
              the array.

              Each subscript must be a scalar numeric
              expression with a value that is within the
              bounds of its dimension.

  Each array element inherits the type, kind type parameter, and
  certain attributes (INTENT, PARAMETER, and TARGET) of the parent
  array.  An array element cannot inherit the POINTER attribute.

  If an array element is of type character, it can be followed by a
  substring range in parentheses; for example:

    ARRAY_D(1,2) (1:3)    ! elements are substrings of length 3

  However, by convention, such an object is considered to be a
  substring rather than an array element.

  The following are some valid array element references for an array
  declared as REAL B(10,20):  B(1,3), B(10,10), and B(5,8).

  For information on arrays as structure components, see DATA DERIVED
  COMP in online Help.

1  –  Order of Elements

  The elements of an array form a sequence known as the array element
  order.  The position of an element in this sequence is its
  subscript order value.

  The elements of an array are stored as a linear sequence of values.
  A one-dimensional array is stored with its first element in the
  first storage location and its last element in the last storage
  location of the sequence.  A multidimensional array is stored so
  that the leftmost subscripts vary most rapidly.  This is called the
  order of subscript progression.

  In an array section, the subscript order of the elements is their
  order within the section itself.  For example, if an array is
  declared as B(20), the section B(4:19:4) consists of elements B(4),
  B(8), B(12), and B(16).  The subscript order value of B(4) in the
  array section is 1; the subscript order value of B(12) in the
  section is 3.