Hi, thanks for your prompt reply! :) I have integrated the liblouisxml dll to a C# application. However I don't think it is working because if I enter a math expression like: 2+3=5 it gives me some translation and when I translate that back I get the same text. Which seems pretty fair to me. However, when I entered some MathML text and I translate it and then translate it back I do not get the original text. I need to be able to translate MathML text to Nemeth Braille and also Nemeth Braille to MathML. Thanks in advance.