Release 1.3 - ...
<field> element
The optional field element can be used to define a specific weight for a certain field (only applicable for native queries). The generated query will be adjusted accordingly to take the field-specific weight(s) into account.
Notice that the required value for the name attribute must match with a fieldname specified within the wherefields element: you must specify the appropriate prefix + the physical fieldname (e.g. "c.title").
Of course, the specified (field)name must also be part of the table/view used.