which i18n function to use?

[Christian Stimming]

-----BEGIN PGP SIGNED MESSAGE-----

Just a question before I mess up thing even more: What is the difference 
between the string translation functions (_ "some text") and (N_ "some 
text") ? 

And in what cases are we supposed to use which one? As far as I understood 
one of them should be used for strings that are some kind of keys, i.e. 
are used to look up some element in a list, and the other version is for 
strings which are only displayed but not used any further, e.g. 
tooltip/help strings. I thought the former is (N_ ) and the latter is (_ ) 
. Is this correct or did I get something wrong?

Christian
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.4 (GNU/Linux)

iQCVAwUBOsYmBGXAi+BfhivFAQHqLgQAhq5mvWXoeDi0wpHwW+qrq5TT7o2pvel4
tn8xb8HYixvDvsw0n7Vz6CG5UZc55kyZkLlCn+BmJ6u6Z9HhfCjz+ZcxcXBe0YGP
6FsbxOOCxxsT28jiaqivkQvRUF+zs99/ct6srDZypDeIFDU/jwN7SJ1h/NdmWdsp
v6q+0Y67+hE=
=jA21
-----END PGP SIGNATURE-----