The language of later documents adopted some of the changes ongoing in continental French and lost many of its original dialectal characteristics, so "Anglo-French" remained (in at least some respects and at least at some social levels) part of the dialect continuum of modern French, often with distinctive spellings. Over time, the use of Anglo-French expanded into the fields of law, administration, commerce, and science, in all of which a rich documentary legacy survives, indicative of the vitality and importance of the language.