default
The value that will be used, or the action that will be taken, unless you
specify differently. In many SQL and 4GL statements, there is a default action that
will be used if you do not specify another; for example, the FETCH statement
retrieves the NEXT row unless you specify a different keyword such as PRIOR.
Screen forms can specify a default value for input from each field, in case the
user fails to enter one.
See also screen form, variable.