sdate(fmt)                   system date

    Return current system date formatted according to integer value of fmt.

    mname == full month name
    amname == abbreviated month name (3 characters)
    wkday == full day name
    aday == abbreviated day name (3 characters)

    integer
    value
    of
    fmt:
    0  - mm/dd/yy
    1  - mm/dd/yyyy
    2  - dd/mm/yy
    3  - dd/mm/yyyy
    4  - amname dd, yyyy
    5  - mname dd, yyyy
    6  - aday mm/dd/yyyy
    7  - wkday mm/dd/yyyy
    8  - aday, amname dd, yyyy
    9  - wkday, mname dd, yyyy
    10 - return amname
    11 - return month name
    12 - return aday
    13 - return wkday
    14 - return current system date in form yymmdd for sorting
    15 - return number of days this century
    16 - return number of days this year

    A  value  greater  than  16,  gives  a  run-time  error and QTAwk halts
    execution.