This link describes Object-Oriented RuleML (OO RuleML), which has been incorporated into RuleML since version 0.87. The OO RuleML version described here makes use of the syntactic principles of FOL RuleML. OO RuleML is a synthesis of three expressive notions: (1) User-level roles provide frame-like slot representations as unordered argument collections in atoms, nanos, and complex terms. (2) Anchored clauses allow for clause labeling, in particual 'webizing' using URIs as object identifiers for facts and rules.

BRML provides a common 'interlingua' representation for rules, suitable to grow into an industry standard, for exchange of rules between heterogeneous rule representations employed in various rule-based applications. Import and export formats for rules may be XML, text, Java objects; the applications need not be in Java.