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In the Domain Expert version of the tutorial, it was shown that sometimes a user can modify calculated values after they are determined by the system, if this is configured so the the Knowledge Engineer. You . You, as a Knowledge Engineer, can enable this functionality by adding a @MODIFY attribute to the data slot of the parameter.

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Parameter Nr will be used to indicate the number of cases (columns) in an entity.

• Provide parameter Nr with the special attribute @NRINST (Data field of Parameter tab in Properties window).

The @NRINST attribute tells Quaestor that the value given/calculated for this parameter indicates the number of instances/cases in an object (in this case an Entityentity). TODO ??? (ASR)

It is useful to also provide Nr with the attribute @INTEGER. The @INTEGER attribute limits input or computed values of the parameter to integer values. If a non-integer value is either computed or provided, the system issues a warning and prompts for other input or for new input of other parameter values that lead to this result. In addition, for this integer value you should change the number of decimal places to 0.

• Perform the necessary modifications.

6    Make parameters multicase

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The following parameters need to be shown in the table: Name$, CaseID, Frame_Nr and X. So you have to set

• Set a @MULTVAL attribute on these parameters.

By doing this, you can see thethese these parameters being moved from list view to table view (you might have to refresh Quaestor with Ctrl+U to redraw the Workbase).

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The function ORCA(1) returns the current case number (during execution). Later on, this calculated value is used to refer to one of the transverse reference planes.

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