From the beginning, PC-Topp has been able to show a one-character field next to the due date, the so-called Date Code, to let users know whether the due date was meant as "exactly on that date", or "earliest" or "latest", to name just a few.

In most plants, that feature remained unused, and in plants where the host system did send data in that field only few people, if any, understood the meaning of the letters appearing next to the due dates.

PC-Topp now offers a table in which the meaning of each code in use can be explained. The corresponding note appears in the Order Summary below the due date.