What & How & Why

<pre><samp>You are in an open field west of a big white house with a boarded front door. There is a small mailbox here.

</samp> <kbd>open mailbox</kbd>

<samp>Opening the mailbox reveals: A leaflet.

</samp></pre>

<sxh apache round 11-15> <ifmodule mod_deflate.c> DeflateCompressionLevel 6 AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE text/php AddOutputFilterByType DEFLATE text/xml AddOutputFilterByType DEFLATE text/css AddOutputFilterByType DEFLATE text/javascript AddOutputFilterByType DEFLATE application/javascript </ifmodule>

<IfModule mod_expires.c> # enable expirations ExpiresActive On ExpiresDefault A2592000 # expire images after a month in the client's cache ExpiresByType image/gif A2592000 ExpiresByType image/jpg A2592000 ExpiresByType image/jpeg A2592000 ExpiresByType image/png A2592000 # css/js ExpiresByType text/css “access plus 4 weeks” ExpiresByType text/javascript “access plus 4 weeks” # html ExpiresByType text/html “access plus 2 days” </IfModule>

</sxh> <sxh css> .verticalcenter{

  position: relative;
  top: 50%;
  -webkit-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);

} </sxh> <sxh php>

  /**
   * Render xhtml output or metadata
   *
   * @param string         $mode      Renderer mode (supported modes: xhtml)
   * @param Doku_Renderer  $renderer  The renderer
   * @param array          $data      The data from the handler() function
   * @return bool If rendering was successful.
   */
  public function render($mode, Doku_Renderer &$renderer, $data) {
      if($mode != 'xhtml') return false;

      if (count($data) != 3) {
          return true;
      }

      list($syntax, $attr, $content) = $data;
      if ($syntax == 'sxh') {
          $title = $this->procTitle($attr);
          $highlight = $this->procHighlight($attr);
          $renderer->doc .= '<pre class="brush: ' . strtolower($attr . $highlight) . '"' . $title . '>' . $renderer->_xmlEntities($content) . '</pre>';
      } else {
          $renderer->file($content);
      }

      return true;
  }

</sxh> <sxh glsl> varying vec3 normal; varying vec3 vertex_to_light_vector;

void main() {

  // Defining The Material Colors
  const vec4 AmbientColor = vec4(0.1, 0.0, 0.0, 1.0);
  const vec4 DiffuseColor = vec4(1.0, 0.0, 0.0, 1.0);

Scaling The Input Vector To Length 1 vec3 normalized_normal = normalize(normal); vec3 normalized_vertex_to_light_vector = normalize(vertex_to_light_vector); Calculating The Diffuse Term And Clamping It To [0;1]

  float DiffuseTerm = clamp(dot(normal, vertex_to_light_vector), 0.0, 1.0);

Calculating The Final Color gl_FragColor = AmbientColor + DiffuseColor * DiffuseTerm; } </sxh> <sxh bash> #!/bin/bash echo “hello bash” exit 0 </sxh>