Relational Grammar, which has evolved from transformational grammar, relies on a "universal grammar" approach. By closely studying this approach, linguists will be able to understand Relational Grammar (RG) well enough to be able to participate in its further development. The basic assumptions of RG are that "subject-of,""direct object-of" and "indirect object-of" are universal grammatical relations based on straightforward semantic notions such as agency, recipiency, and affect. How these universal grammatical relations are manifested in various languages is illustrated by the examples of noun phrase marking, verb marking, linear precedence, advancements, replacements, relative clauses and other syntactic devices. In the appendices, the RG laws and tendencies, syntactic tests for grammatical relations, and marking devices are summarized. Direction for further study is provided by the attached bibliography and footnote references. (PMJ)