verbatimtex \documentclass{article}
%<-- My T2A encoding
\usepackage[warn]{mathtext}
\usepackage[T2A]{fontenc}
\usepackage[koi8-r]{inputenc}
\usepackage[english,russian]{babel}
\begin{document}
etex;

%А теперь мы его завращали
beginfig(1) ;
  for alpha:=90 step -3 until 0:
    label(btex Linux Format etex
      scaled (5*(1-alpha/100)) rotated alpha,(0,0))
    withcolor (max(1-alpha/45,0)*red+
      min(alpha/45,2-alpha/45)*green+
      max(alpha/45-1,0)*blue);
  endfor;
endfig ;

%А теперь мы его завращали
beginfig(2) ;
  for alpha:=-90 step 3 until 0:
    label(btex LinuxFormat в России etex
      scaled (5*(1+alpha/100)) rotated alpha,(0,0))
    withcolor (max(1+alpha/45,0)*red+
      min(-alpha/45,2+alpha/45)*green+
      max(-alpha/45-1,0)*blue);
  endfor;
endfig ;

%Математика вместо Hello, World!
beginfig(3) ;
  for alpha:=90 step -9 until 0:
    label(btex \(f(x)=\frac{1}{\sqrt{2\pi}\,\sigma}
	      \int\limits_{-\infty}^{\infty}e^{-\frac{x^2}{2\sigma^2}}dx\) etex
      scaled (5*(1-alpha/100)) rotated alpha,(0,0))
    withcolor (max(1-alpha/45,0)*red+
      min(alpha/45,2-alpha/45)*green+
      max(alpha/45-1,0)*blue);
  endfor;
endfig ;


%MetaPost на Википедии 03.09.2006 10:02
beginfig(4) ;
  for alpha:=-90 step 3 until 0:
    label(btex MetaPost на Википедии etex
      scaled (5*(1+alpha/100)) rotated alpha,(0,0))
    withcolor (max(1+alpha/45,0)*red+
      min(-alpha/45,2+alpha/45)*green+
      max(-alpha/45-1,0)*blue);
  endfor;
endfig ;

end.
