Various special situations (e.g., installing Drupal behind a firewall, installing Drupal in a subdirectory of the webserver's document root) are discussed in this section. Information specific to particular operating systems or database platforms may be found elsewhere.

A Drupal site can have three kinds of modules:

Several people have asked how to specify the character encoding that Drupal uses. The short answer is: you can't.

Drupal uses UTF-8 for encoding all its data. This is a Unicode encoding, so it can contain data in any language. You no longer need to worry about language specific encodings for your website (such as Big5, GB2312, Windows-1251 or 1256, ...). Also, when Drupal imports external XML data (such as RSS or XML-RPC), it is automatically converted into UTF-8 (iconv support for PHP will be required for most encodings).

This is the customization guide and 'how to' guide for implementing business functionality and features into your Drupal site.