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Since the primary function of pretty-print is to format code, shouldn't it be defined in terms of write rather than display? For consistency with ~& it may actually make sense to define the minimal pretty-print to be something like (define (pretty-print obj port) (newline port) (write obj port) (newline port)) Should ~C display the character, write the character, or display the name of the character as in CL? ~A is for display and ~S for write, so I would suggest the latter (currently it's the equivalent of ~A). -- Alex