Models often use settings that do not change every week. We call these settings parameters, like the transmission of the greenhouse cover or the number of tomatoes on a truss. You do not have to enter these parameters every week, but it is convenient to see their value. We updated the manual data entry so it is always clear what the value is. In the tooltip we display the date of that value.
In graphs a parameter is shown with a step line. After all, a parameter has the same value, until a new value is entered.