A set of configuration template files is structured as follows, assuming that the root folder is default/ or custom/. Editing these files changes the Apache configuration.

Root templates are starting points in generating configuration files. Plesk always starts generating a configuration from one of these files. All root templates contain statements that include the other templates located in respective folders (domain, server and service).
	atmail.php			Root template of a server-wide configuration for Atmail Light.
	atmailcom.php			Root template of a server-wide configuration for Atmail Full.
	domainForwarding.php			Root template of a per-website configuration for websites with forwarding, either standard or frame.
	domainVhost.php			Root template of a per-website configuration for hosted websites.
	domainWebmail.php			Root template of a per-website configuration for a webmail service.
	horde.php			Root template of a server-wide configuration for Horde.
	server.php			Root template of a server-wide configuration for server services, such as Tomcat, Mailman and several others. For details, see the contents of the server/ directory below.
	nginx.php			(In Plesk 11.0+) This template includes the server-wide configuration of nginx.
	domain/			Contains templates included in a per-website configuration.
		domainVirtualHost.php		Configuration for hosted website addressed by domain name.
		frameForwarding.php		Configuration for website with frame forwarding.
		nginxDomainVirtualHost.php		(In Plesk 11.0+) This template includes per-website configuration of nginx.
		standardForwarding.php		Configuration for website with standard forwarding.
		subDomainVirtualHost.php		Configuration for hosted website addressed by subdomain name.
		service/		Contains templates of configuration for website services included in a website configuration.
			bandWidth.php	Configuration for website bandwidth limits.
			errordocs.php	Configuration for website error documents.
			protectedDirectories.php	Configuration for password-protected website directories.
			tomcat.php	Configuration for the Tomcat service on a website.
	server/			Contains templates included in a server-wide configuration.
		PCI_compliance.php		Defines directives specific to meeting PCI compliance.
		mailman.php		Configuration for the Mailman service.
		nameVirtualHost.php		Defines NameVirtualHost directive.
		tomcat.php		Configuration of the Tomcat service.
		vhosts.php		Configuration for the server default virtual host (a virtual host addressed if a request is made to an IP address registered in Plesk but no default website is assigned to it).
	service/			Contains context-free templates of configuration for various services.
		asp.php		Configuration for ASP.
		mod_fastcgi.php		Configuration for FastCGI.
		mod_perl.php		Configuration for Perl.
		mod_python.php		Configuration for Python.
		php.php		Configuration for PHP.
		php_over_cgi.php		Configuration for PHP over CGI.
		php_over_fastcgi.php		Configuration for PHP over FastCGI.