Smarty mode
    
    Mode for Smarty version 2 or 3, which allows for custom delimiter tags.
    Several configuration parameters are supported:
    
        leftDelimiter and rightDelimiter, which should be strings that determine where the Smarty syntax starts and ends. 
        version, which should be 2 or 3. 
        baseMode, which can be a mode spec like "text/html" to set a different background mode. 
    
    
        MIME types defined: text/x-smarty
    Smarty 2, custom delimiters
    
    Smarty 3