+\ --- Rationals ---
+
+' make-rational 2 make-fa-primitive make-rational
+
+:noname ( ratnum -- fixnum )
+ drop pair-type car
+; 1 make-fa-primitive rat:numerator
+
+:noname ( ratnum -- fixnum )
+ drop pair-type cdr
+; 1 make-fa-primitive rat:denominator