hi all,
from http://oberspace.dyndns.org/index.php/topic,518.0.html 
ten days ago they talk about Knuth's example"Man or boy test",
I have done some work to make their  example can work within bb .you can test  the attached.
actually,  It is only a local procedure be packed as a normal procedure, not a true closure.
Q: does we need cp  support closures?
for my little knowledge of closure reason,I don't known what syntax styles should be add to cp if we want it.
 reference, example and suggestion is welcome!
best regards,
luowy