The Report Writer AT statements display header and summary lines
       at the top and bottom of the report, and at the top and bottom of
       pages and control groups (groups of sorted records with the same
       value in one or more fields).

       The AT TOP statement summarizes information for the entire group
       of records in the current collection, not the records of the
       page, group, or report that you specify in the statement.

       The AT BOTTOM statement calculates the summary information based
       on the records of the page, group, or report that you specify in
       the statement.

       With the two forms of the AT statement, you can specify the
       value, position, and format of the print objects in the header
       and summary lines:

       The AT statements accept the same types of print objects as a
       PRINT statement.

       Format

                       { REPORT     }
         AT BOTTOM OF  { PAGE       } PRINT summary-element [, ...]
                       { field-name }
                       {            }

                    { REPORT     }           { header-element  }
         AT TOP OF  { PAGE       }   PRINT   {                 } [, ...]
                    { field-name }           { summary-element }
                    {            }