If the value is @FALSE or parameter is not specified, the function returns value of the field.
If the value is @TRUE, the function returns the following according to the column type:
- Column type Object: function returns the object identifier (HBJ), which refers to the field
- Other column type: function returns the invalid value
Example
The function provides an alternative method of the access
to items of a structure using the row and column index. In this
context, structure is taken as a value matrix.
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