libdrapa is an add-on for libstrophe, extending it by some XEP's.
Drápa is a laudatory verse form in medieval norse literature.
As of [SKALD] "Long forms [of ... skaldic verses] include the drápa, a series of stanzas with a refrain [...] at intervals...".
[SKALD] https://en.wikipedia.org/w/index.php?title=Skald&oldid=1106011629