Regular.

A line of Emacs verse;
  forgive its being so terse.

Another

Multiple stanzas may be included in one set of <verse> tags, as follows.

A line of Emacs verse; [2]
  forgive its being so terse. [3]

In terms of terse verse,
        you could do worse. [1]

 A. This poetry will stop here.

[2] Another author

[3] This sucks

[1] The author