<?xml version="1.0"?>
<article xmlns="http://docbook.org/ns/docbook">
  <section>
    <title>C</title>
    <programlisting><?language c?>int main(int argc, char **argv)
{
    puts("Hello, world!");
    return 0;
}</programlisting>
  </section>
  <section>
    <title>C#</title>
    <programlisting><?language csharp?>using System;
namespace Hello
{
    class HelloWorld
    {
        static void Main()
        {
            Console.WriteLine("Hello, world!");
        }
    }
}</programlisting>
  </section>
  <section>
    <title>Go</title>
    <programlisting><?language go?>package main
import "fmt"
func main() {
    fmt.Println("Hello, world!")
}</programlisting>
  </section>
  <section>
    <title>Java</title>
    <programlisting><?language java?>public class Hello {
    public static void main(String[] args) {
        System.out.println("Hello, world!");
    }
}</programlisting>
  </section>
  <section>
    <title>Javascript</title>
    <programlisting><?language javascript?>function hello() {
    console.log("Hello, world!");
}</programlisting>
  </section>
  <section>
    <title>Pascal</title>
    <programlisting><?language pascal?>program hello;
begin
  writeln('Hello, world!')
end.</programlisting>
  </section>
  <section>
    <title>POSIX shell</title>
    <programlisting><?language sh?>#!/bin/sh
if true
do
    echo "Hello, world!"
done</programlisting>
  </section>
  <section>
    <title>Python</title>
    <programlisting><?language python?>def hello():
    print 'Hello, world!'</programlisting>
  </section>
  <section>
    <title>Ruby</title>
    <programlisting><?language ruby?>def hello
    print "Hello, world!\n"
end</programlisting>
  </section>
  <section>
    <title>Rust</title>
    <programlisting><?language rust?>fn main() {
    println!("Hello, world!");
}</programlisting>
  </section>
  <section>
    <title>SQL</title>
    <programlisting><?language sql?>SELECT *
FROM messages
WHERE text = 'Hello, world!';</programlisting>
  </section>
  <section>
    <title>XML</title>
    <programlisting><?language xml?><![CDATA[<root>
  <message>Hello, world!</message>
</root>]]></programlisting>
  </section>
  <section>
    <title>XSL</title>
    <programlisting><?language xsl?><![CDATA[<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="root">
    <msg>
      <xsl:value-of select="message"/>
    </msg>
  </xsl:template>
</xsl:stylesheet>]]></programlisting>
  </section>
</article>