\setuppapersize
  [A4]
  [oversized]

\setupcolors
  [state=start]

\definecolor
  [light][m=.3,y=.5]

\setupbackgrounds
  [page]
  [background=color,backgroundcolor=light,backgroundoffset=5mm]

\usetypescriptfile[type-cow]
\usetypescript[cow][default]
\usesymbols[cow]

\setuplayout
  [location=middle,
   marking=on,
   width=middle,
   height=middle,
   header=0pt,
   footer=0pt,
   backspace=1cm,
   topspace=1cm]

\def\SampleText#1#2%
  {\hbox to \hsize{\definedfont[Cows at #1]\hss\handletokens#2\with\hss\hss\hss}}

\starttext

\startstandardmakeup
    \SampleText{200pt}{x}
    \vfill
    \SampleText{150pt}{hz}
    \vfill
    \SampleText{120pt}{dek}
    \vfill
    \SampleText{90pt}{TeX and MP}
    \vfill
    \SampleText{75pt}{ConTeXt}
    \vfill
    \SampleText{60pt}{MetaFun}
    \vfill
    \SampleText{45pt}{Duane - Taco - Hans}
    \vfill
    \definedfont[Cows at 15.5pt]\input zapf \endgraf
    \setupinterlinespace[line=14.5pt]
    \wordright{Hermann Zapf}
\stopstandardmakeup

\definepapersize
  [IkeaA3]
  [width=29.3cm,
   height=39.3cm]

% \definepapersize
%   [HPA3oversized]
%   [width=13in,
%    height=19in]

\setuppapersize
  [IkeaA3]
  [oversized]

% \setuppapersize
%   [IkeaA3]
%   [HPA3oversized]

\setuplayout
  [location=middle,
   marking=on,
   width=middle,
   height=middle,
   header=0pt,
   footer=0pt,
   backspace=1.4cm,
   topspace=1.35cm]

\startstandardmakeup
    \SampleText{1.35\dimexpr200pt\relax}{x}
    \vfill
    \SampleText{1.35\dimexpr150pt\relax}{hz}
    \vfill
    \SampleText{1.35\dimexpr120pt\relax}{dek}
    \vfill
    \SampleText{1.35\dimexpr90pt\relax}{TeX and MP}
    \vfill
    \SampleText{1.35\dimexpr75pt\relax}{ConTeXt}
    \vfill
    \SampleText{1.35\dimexpr60pt\relax}{MetaFun}
    \vfill
    \SampleText{1.35\dimexpr45pt\relax}{Duane - Taco - Hans}
    \vfill
    \definedfont[Cows at 1.35\dimexpr15.5pt\relax]
    \setupinterlinespace[line=1.35\dimexpr14.5pt\relax]
    \input zapf \endgraf
    \wordright{Hermann Zapf}
\stopstandardmakeup

\stoptext
