[CM] (sub)environments and object->string with :readable

[bil at ccrma.Stanford.EDU]

"readable" in this context means readable by s7.  So, yes, that's about 
what I'd
expect.  You can do this more simply:

(define *subnamespace* (inlet :nested-curlet (inlet :nested 1)))

and to print it:

(display (*subnamespace* :nested-curlet))

which gives:

(inlet 'nested 1)

and similarly with (format #f "~S" (*sub...))