All session vars:

$_SESSION["aigaionerror"] - error message to be displayed on next page load
$_SESSION["aigaionmessage"] - message to be displayed on next page load
$_SESSION["personID"] - id number of current user
$_SESSION["personLogin"] - login name
$_SESSION["u_rights"] - integer user-rights-level
$_SESSION["database"] - name of current database in use
$_SESSION["config"] (an array of site config settings...)
$_SESSION["usertheme"]  the name of the user selected theme...
$_SESSION["summarystyle"] - (author|title): what is displayed first in pub summary 
...
...
meer!

