% language=us runpath=texruns:manuals/bidi \startcomponent bidi-vertical \environment bidi-style \startchapter[title={Going vertical}] Normally the term bidi is reserved for horizontal direction swapping but there is no reason to limit our view to that. So, here I will spend some words on how we can deal with vertical directions. {\em I will move some (not yet public) explanation from elsewhere to here in due time.} \stopchapter \stopcomponent