How to run a single etap test, and how to see io:format()

[Andrey Somov]

Hi all,
I wanted to know how couch_key_tree:merge() works running 060-kt-merging.t
from trunk.

While looking in the documentation I could not find the answer to a couple
of questions:

1) How can I see the outcome of io:format() in a etap test ?
2) how can I run a single etap test ?

Thank you,
Andrey