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I tried to modify wikka' s language and had a character **""à""** inside the description.
Then, the page could not be displayed correctly, and the error was caused by my special character!
So I decided to substitute my **""à""** by **à** but error again.

Could someone help me?
Or is there a simple way to convert all incorrect character by another one that is correct, ie : ""à"" or ""á"" by just **a**?