QKB$ returns  returns the contents of the reference or data slot of a parameter

Syntax

QKB$(ParName$, DataType$)

Arguments 

• Parname$ is a string expression containing the name of a parameter in the knowledge base.
• DataType$ is a string expression returning the data type, either "DATA" or "REFERENCE", corresponding to the slot of which the contents should be returned.

...

1. Any value of DataType$ starting with "D" or "d" is considered equivalent to "DATA".
2. Any value of DataType$ starting with "R" or "r" is considered equivalent to "REFERENCE".
3. For any other value of DataType$, QKB$() returns "NullString". 
4. If parameter ParName$ is not present in the correct knowledge base, QKB$() returns "NullString". 

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