subtract
subtract(time: Time): TimeStampInterval;
The subtract method of the Time primitive type returns the interval between the receiver and the value of the time parameter as a TimeStampInterval value.
The following example shows the use of the subtract method.
vars now, hourFromNow : Time; begin hourFromNow:= now + 60 * 60 * 1000; write hourFromNow.subtract(now); // Outputs "0:01:00:00.000" end;