APPENDIX A: MASKS

               Masks,  used for creating input restrictions, can consist of
          two parts: functions and template symbols.  Functions, which  act
          on  the entire field, are listed at the beginning of the template
          and are preceded  by  an  @  symbol.   Templates,  which  act  on
          specific  characters  in  the  expression being formatted, follow
          this  list  of  functions.   Templates  for  numeric  data   also
          determine the length of the display.
               Seperate functions and templates with a space; e.g., @! XXX.


                              List of Function Symbols
                              ------------------------

                       C   Displays CR after a positive number
                       X   Displays DB after a negative number
                       (   Displays negative numbers in parentheses
                       B   Left justifies input
                       Z   Displays numeric zeros as blanks
                       D   Displays dates in American format
                       E   Displays dates in European format
                       A   Limits display to alphabetic characters
                       !   Displays all letters as uppercase letters
                       R   Characters in template which are not template
                           symbols are added to the data for display
                           only  and  are  not considered part of the
                           input value
                       Sn  Limits display size to n characters.  If the
                           item is larger than n, it will scroll
                           horizontally


                              List of Template Symbols
                              ------------------------

                       9   Allows digits 0-9; also allows + and - signs
                           for numeric data
                       #   Allows digits 0-9, blank, + and - signs
                       A   Allows alpha characters A-Z and a-z
                       L   Allows logical input only
                       Y   Limits input to Y, N, y, n for character data
                           and logical data
                       N   Limits input to A-Z, a-z, and 0-9
                       X   Allows any character
                       !   Displays lowercase letters as uppercase letters
                       $   Replaces leading zeros or blanks with $
                           (in numbers)
                       *   Replaces leading zeros or blanks with * (in
                           numbers)
                       .   Sets decimal position
                       ,   Displayed only if there is a digit to left
                           of the comma

                                        -A1-