\environment luatex-style

\startcomponent luatex-export-titlepage

\setupexport
  [cssfile=extra-styles.css]

\settaggedmetadata
  [    title={LuaTeX Reference Manual},
   copyright={LuaTeX Development Team},
     version={\documentvariable{version}},
      status={\documentvariable{status}},
    snapshot={\documentvariable{snapshot}},
        date={\rawdate[weekday,day,month,year]},
         url={www.luatex.org}]

\setupbackgrounds
  [leftpage]
  [setups=pagenumber:left]

\setupbackgrounds
  [rightpage]
  [setups=pagenumber:right]

\startpreamble
    This document is derived from the original manual. When examples are given,
    they assume processing by \LUATEX\ and therefore will not show up as
    intended. The \PDF\ version is the real reference.
\stoppreamble

\stopcomponent