Paragraphs sometimes run together or begin in the wrong places. Problems with grammar or usage are not serious enough to distort meaning. Spelling is usually correct or reasonably phonetic on common words. Moderate editing would be required to polish the text for publication. Errors in grammar or usage are very noticeable, and may affect meaning.
Spelling errors are frequent, even on common words.
The reader must read once to decode, then again for meaning. Extensive editing would be required to polish the text for publication.