Poem continues

 
A lovely German poetry volume has a font glyph which indicates that a poem on a facing or recto page continues on the next, back or verso page: the character resembles // but I do not find one in the Ogham Unicode 6.0 page or the like.  It seems to be more of an issue in bilingual books with the source language on verso and the translations on recto pages such that both pages may benefit from a continuation character.  Judging from what I.A. Richards wrote about when a poem knows that it is done, the reader may deserve the same.  This is clearly more of an issue in e-book formats.

I do see some lovely Unicode points for the glyphs in the Canadian Aboriginal Syllabics.

Some poetry is set with a centered asterisk between sections.  I recall having seen a variety of barred lines and curved-lines for poem separations or endings.

A very simple macro in Curl would allow you to choose what to place within a poem immediately prior to where a page break has been placed.

One user-controlled optional presentation feature in Curl web content line-numbering could be
    50 / 150 (at verso last line)
  100 / 150 (at recto last line)
which might alert a reader (but perhaps not well-advised for some epic poems.)