You can use the following Variables :
$scriptname : Script Name
$live_path : Original Installation Path
$live_url : Original Installation URL
$path : Pushed Installation Path
$version : Version
$url : Pushed Installation URL
$admin_url : Admin URL
$datadirectory : Data Directory
$dbname : MySQL Database
$dbuser : MySQL DB User
$dbhost : MySQL DB Host
$dbpass : MySQL DB Password
$cron : Cron Command
$time : Time of Installation
$sn : Site Name (Can be changed from Webuzo Admin panel -> Settings)
$user_name : User Name
$user_email : User Email

Note : You can use an IF for an Optional Variable in the following manner :
<if $VARIABLE_NAME>$VARIABLE_NAME</if>