verse represents an instance of poetry. A verse can contain verse-lines, when a stanza is not appropriate, or stanzas (which contain verse-lines). The element specializes from <lines>, so all white space within the <verse> element is significant by default.
verse is a specialization of lines.
+ topic/lines d4p-verse-d/verse
<verse> <stanza> <verse-line>'Twas brillig and the slithy tothes</verse-line> <verse-line>Did gyre and gymbal in the wabe</verse-line> <verse-line>All mimsy were the borogroves</verse-line> <verse-line>And the mome raths outgrabe.</verse-line> </stanza> </verse>