Options in Beta Stage?

Just curious what the following options do:

PHP Code:

    // ****** OPTIONS IN BETA STAGE ******
    // The following options are in beta stage.
    define('VBSEO_CHECK_WWWDOMAIN',     0);
    define('VBSEO_CUSTOM_DOCROOT',     '');
    define('VBSEO_NOVER_INFO',          0);
    define('VBSEO_ENABLE_GARS',          0); 


Code:

define('VBSEO_CHECK_WWWDOMAIN',     0);

checks if the visitor has entered www.yourdomain.com or just yourdomain.com, if they has used yourdomain.com they will be redirected (not sure if thats the correct word) to www.yourdomain.com

Code:

define('VBSEO_NOVER_INFO',          0);

allows you to not display the version number in the footer,

i'm not sure what the other settings do,


Iain