I am looking to include fields into emails that are not listed in the selector. 

EG: in the close email, I want to include the closing comment entered by the person who closed the request.

Another EG: when a request is updated, there is a reason for update field, so I would like to include that in the notification email, but it is unavailable to add.  

One final EG: I would like to add request History to Notifications, so the customer does not have to look back in the system to get a brief synopsis of what is happening.  

George