From dada6a4f6316bb6d487d4094e261a7c3ceebf651 Mon Sep 17 00:00:00 2001
From: Arthur de Jong <arthur@arthurdejong.org>
Date: Sun, 26 Feb 2012 15:08:37 +0000
Subject: some more documentation improvements

git-svn-id: http://arthurdejong.org/svn/python-stdnum/python-stdnum@168 9dea7c4f-944c-4273-ac1a-574ede026edc
---
 stdnum/iban.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'stdnum/iban.py')

diff --git a/stdnum/iban.py b/stdnum/iban.py
index 2c7d4c8..4b1e621 100644
--- a/stdnum/iban.py
+++ b/stdnum/iban.py
@@ -19,7 +19,13 @@
 
 """IBAN (International Bank Account Number).
 
-The IBAN is used to identify bank accounts across national borders.
+The IBAN is used to identify bank accounts across national borders. The
+first two letters are a country code. The next two digits are check digits
+for the ISO 7064 Mod 97, 10 checksum. Each country uses it's own format
+for the remainder of the number.
+
+Some countries may also use checksum algorithms within their number but
+this is currently not checked by this number.
 
 >>> is_valid('GR16 0110 1050 0000 1054 7023 795')
 True
-- 
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