Oh I totally missed that in the specification. One alternative to raising an exception is to wrap the text for the user so that it fits in 78 characters and emit an INFO message. While I think it makes sense to allow tables to be read in that aren't quite standard-compliant, we should definitely write out standard-compliant tables. Wrapping the comment for the user allows her/him to put a very long string in a comment field and let this writer figure out the details. There is a built-in ``textwrap`` module that could be used.

What do you think?