Here is what I have been experimenting.
If I open that file with "Firefox" I get the following message: ======================================================= XML Parsing Error: not well-formed Location: essai.xml Line Number 5, Column 9: Etoil? ---------------^ ======================================================= I don't understand why there is an error... How am I supposed to write it?
For converting text files to UTF-8 encoding Microsoft's own Notepad is very reliable in my experience (even if other editors claim to do the same).
hth Frank