Hello everybody ! ( Bonjour tous ! ) Well ! I am very touched ( touch ! ) by your declaration Vitas777 !... And ... I am very happy to read that my english has got ... a French accent !!! It makes me smile ! ( Cela me fait bien sourire ! ) You're right when you write : " It may be difficult to express technical ideas " ... it's so true !!! It's not easy to translate the tools in French ... but we try with ... hum ?..." acharnement " in French !!! Let's enjoy quoiqu'il en soit ! Be happy !