I now see that the necessary primitives are referenced on p.~54; it was clearly unfortunate that I searched for "page width" and not for the corresponding PdfTeX primitive in the first place !
Philip Taylor (Webmaster, Ret'd) wrote:
Dear Colleagues -- Studying http://xml.web.cern.ch/XML/lgc2/xetexmain.pdf I can see no mention of "page width". What is the XeTeX method for setting the page width, analogous to PdfTeX's \pdfpagewidth, please ? Philip Taylor
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