ring <span>&#45;&gt;</span> <span><a href="../Nmea/Sentence/index.html#type-t">Nmea.Sentence.t</a> option</span></code></dt><dd><p><code>parse_opt s</code> parses the sentence s, failsafe</p></dd></dl><dl><dt class="spec value" id="val-next"><a href="#val-next" class="anchor"></a><code><span class="keyword">val</span> next : Stdlib.in_channel <span>&#45;&gt;</span> <span><a href="../Nmea/Sentence/index.html#type-t">Nmea.Sentence.t</a> option</span></code></dt><dd><p><code>next ch</code> returns the next sen