The following substitutions can be used here. They will be replaced with the actual values from the domain when the template is used :

${DOM} The domain name, such as foo.com
${IP} The virtual server's IP address, like 1.2.3.4
${DNS_IP} The virtual server's external IP address, used in DNS records
${USER} The server's administration login, such as foo
${GROUP} The Unix group for this virtual server.
${UID} and ${GID} The server's Unix user ID and group ID respectively
${HOME} The server's home directory, like /home/foo
${EMAILTO} The virtual server's contact email address
${PARENT} If this is a sub-server, the unique ID of the parent domain.
${ALIAS} If this is an alias, the unique ID of the target domain.
${ID} The unique numeric ID for this domain.
${CREATED} The timestamp at which this domain was created.
${DB} MySQL or PostgreSQL database name.
In addition, conditional blocks like ${IF-MAIL}...${ENDIF-MAIL} and ${IF-WEB}...${ELSE-WEB}...{$ENDIF-WEB} may be used.