Using MS word with a braille display

Hi all,
I have tried using the text file option in dropbox but could only type one line.
I therefore found the MS word app on IOS did exactly what I wanted to achieve.
However, how do I edit in a document ie type a sentence and go to a new line as dot 8 doesn't seem to work.
Any general tips on how to navigate and use the App would be great!

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