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+(declare (usual-integrations))
+
+
+(define (identity x) x)
+
+(define (any? x) #t)
+
+
+(define ((compose f g) x) (f (g x)))
+
+
+;;; This is to keep the Scheme printer from going into an infinite
+;;; loop if you try to print a circular data structure, such as an
+;;; environment
+
+(set! *unparser-list-depth-limit* 10)
+(set! *unparser-list-breadth-limit* 10)