Description
PSCGetUsedFields parses the expression and extracts all names of the fields that participate in it. For a field that is used several times PSCGetUsedFields will return name only once. In AExpr parameter you must specify the filter expression. In AFields parameter you must pass the container where PSCGetUsedFields will store participated field names. You can specify in a AResWords parameter list of reserved words such as parameters that must be excluded from the resulting list of fields. If AResWords is empty or Nil then all participated fields will be returned.