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1 Adding parameters to Transverse planes and Horizontal planes 
The user must be able to define a table containing a number of transverse reference planes. In the Domain Expert tutorial, the purpose of entity Transverse planes is described in detail.
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2 Enable users to modify calculated values 
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. 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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3 Modify parameter display order 
It can be desirable to influence the parameter display order in the Workbase list. Normally, Quaestor puts parameters in alphabetal order. An @ORDER attribute on a parameter defines the relative position of the parameter in the Workbase list. Define this position by: @ORDER:RelativePosition, in which RelativePosition is an integer. The @ORDER values need not be consecutive. Parameters are sorted on RelativePosition from low to high. Values with no @ORDER attribute are placed below parameters with @ORDER attributes.
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4 Define minimum and maximum values for parameters 
Another interesting feature to assist the user, is to provide feedback about minimum and maximum input values. Moreover, you can make these boundaries into hard ranges in order to prevent the user from providing values that might cause faulty results.
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5 Have a parameter determine the number of cases in an entity 
Parameter Nr will be used to indicate the number of cases (columns) in an entity.
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6 Make parameters multicase 
Normally, the value of any single value parameter is displayed in the list view.
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7 Provide default values 
- Create the following relation for parameter
Xin entityTransverse planesin the Workbase:
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