You can click on the Google or Yahoo buttons to sign-in with these identity providers,
or you just type your identity uri and click on the little login button.
Be able to produce bills without VAT, for example when working abroad.
Today, the only way is to put a VAT of 0%, which is ugly.
This story will benefit the new xml format that will be designed in "#4362: User customized metadata for bills"
Ticket #2935 - latest update on 2011/01/05, created on 2006/11/06 by Olivier Cayrol