Example: pl=perl php4=php
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Important message to Windows users that will run PHP scripts: PHP 5 uses "php-cgi" to run php-scripts while older PHP versions (PHP 4 or older) are all using "php" to run php-scripts. Xerver is by default configured for PHP 4 which uses "php". If you have PHP 5 or plan to install PHP 5, make sure that you have "php=php-cgi" in the scroll list above.
The command for Perl-script is "perl". The command for PHP-script is "php" (or "php-cgi"). However, some files are runnable without a command, such as "exe" files on windows. The command for exe-files is "" (nothing).