GET_INFO(ARRAY_VARIABLE)

     For an overview of the GET_INFO built-in, see the HELP topic GET_INFO.

     The following strings can be used for parameter2 when parameter1 is an
     array variable:

       Parameter 2       | Return Value  (Parameter 1 is an array variable)
      -------------------+----------------------------------------------+
       "low_index"       | Array index - Lowest valid integer index for
                         |               the array
                         | UNSPECIFIED - if none
       "high_index"      | Array index - Highest valid integer index for
                         |               the array
                         | UNSPECIFIED - if none
       "current"         | Array index - Index value of current element
                         |               of the specified array,
                         |               whether the index is of type
                         |               integer or some other type
                         | UNSPECIFIED - if none
       "first"           | Array index - Index value of first element
                         |               of the specified array,
                         |               whether the index is of type
                         |               integer or some other type
                         | UNSPECIFIED - if none
       "next"            | Array index - Index value of next element
                         |               of the specified array,
                         |               whether the index is of type
                         |               integer or some other type
                         | UNSPECIFIED - if none
       "previous"        | Array index - Index value of next element
                         |                of the specified array,
                         |                whether the index is of type
                         |                integer or some other type
                         | UNSPECIFIED  - if none
       "last"            | Array index - Index value of last element
                         |               of the specified array,
                         |               whether the index is of type
                         |               integer or some other type
                         | UNSPECIFIED - if none
      -------------------+------------------------------------------------+