Re: Trimbox and crop marks on cover page

some more

\definepapersize
   [cover]
   [width=330mm,
    height=240mm]

\setuppapersize
   [distance=38mm]

\setuplayout
   [marking=color,
    location=middle,
    cropoffset=0mm,
    trimoffset=-7.5mm,
    bleedoffset=3mm]

\starttext

\setuppapersize[cover][oversized]

\startpagemakeup

\paperbleed  1mm
\spinewidth 15mm

\startsetups spinetitle
     \hbox to \paperheight \bgroup
         \hskip1cm
         \bfd \setstrut \strut
         Here is something spine
         \hss
         Okay
         \hskip1cm
     \egroup
\stopsetups

\startsetups booktitle
     \definefont[Biggish][SerifBold @ 36pt]
     \framed
         [foregroundstyle=Biggish,
          align=flushright]
         {
             What is this\\all about
         }
\stopsetups

\startMPcode
     StartPage;
         fill Page enlarged PaperBleed withcolor "darkyellow" ;
         draw image (
             draw leftboundary  Page shifted ( 
PaperWidth/2-SpineWidth/2,0) ;
             draw rightboundary Page shifted 
(-PaperWidth/2+SpineWidth/2,0) ;
         )  withcolor "white" withpen pencircle scaled 1mm ;
         draw
             textext.rt("\setups{spinetitle}") rotated 270
             shifted (PaperWidth/2,PaperHeight)
             withcolor "white" ;
         draw
             textext.llft("\setups{booktitle}")
             shifted urcorner Page
             shifted (-1cm,-1cm)
             withcolor "white" ;
     StopPage;
\stopMPcode

\stoppagemakeup

\stoptext

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