In dialogue processing applications where expressions like today'' or next week'' are used, it is necessary to know the current time. When doing regression testing, it is then useful to be able to set a notional time, so that responses to time-dependent utterances stay stable.

The {\tt DIALOGUE\_\-TIME} command makes it possible to print the notional time from the command-line. The notional time can also be retrieved using the predicate {\tt get\_\-notional\_\-time/1} in {\tt PrologLib/utilities.pl}.