Glad I could help 
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Nice find. Didn’t know that was a thing.
And just for some (minor) clarity, this is solely based on the input. Revit accepts all of those line breaks. It’s just that Windows is using \r\n when the value is typed in. You could use \r or \n with Dynamo and Revit would retain that special character. This is just to point out that a line break doesn’t always mean \r\n in Revit. You may still need to check for which special character is being used.
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