Checking who is previewing this item

I would like to know if there are any system variables or functions which allow me to display the name of who is previewing a particular page. The implementation document only states checkoutusername which I am assuming, is only for checkout.

Alex,

Yes, Checkout User Name is the user to whom the Content Item is currently checked out.

Percussion CM does not have a mechanism for tracking who is previewing a Content Item.

RLJII