wrap lines in horizontal dls at 320
wrap lines in horizontal dls at 320

astashov/dartdoc,jakemac53/dartdoc,d2m/dartdoc-2015,d2m/dartdoc-2015,astashov/dartdoc,keertip/dartdoc,d2m/dartdoc-2015,jakemac53/dartdoc,keertip/dartdoc,dart-lang/dartdoc,jakemac53/dartdoc,srawlins/dartdoc,dart-lang/dartdoc,srawlins/dartdoc,keertip/dartdoc,a14n/dartdoc,d2m/dartdoc-2015,dart-lang/dartdoc,a14n/dartdoc,srawlins/dartdoc,astashov/dartdoc,keertip/dartdoc,astashov/dartdoc,srawlins/dartdoc,a14n/dartdoc,jakemac53/dartdoc,dart-lang/dartdoc