Hello world/Markup e formattazione

Copertina Hello world/Copertina

Di seguito vengono illustrati esempi di Hello world su linguaggi di markup e formattazione.

HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
 <head>
   <title>Hello World!</title>
 </head>
 <body>
   <p>Hello World!</p>
 </body>
</html>

LaTeX

\documentclass{article}
\begin{document}
Hello World!
\end{document}

MetaPost

   defaultfont := "Courier";
   
   beginfig(0);
   label("Hello, world!", (10,10));
   endfig;
   
   end.

PostScript

   /Courier findfont
   24 scalefont
   setfont
   100 100 moveto
   (Hello World!) show
   showpage

RTF

   {\rtf1\ansi\deff0
   {\fonttbl {\f0 Courier New;}}
   \f0\fs20 Hello World!
   }

TeX

   \font\HW=cmr10 scaled 3000
   \leftline{\HW Hello World}
   \bye