Call to Adhoc display from external app/display appending tags

Allow PI Vision adhoc display to (when already open in a browser window/tab) retain previous tag(s), calcs, trend configuration in the Adhoc display when called again with additional dataitem(s) to append to the trend. When calling the PI Vision Adhoc display with something like a "append=true" url parameter the tag(s) in the DataItems parameter are appended to any existing/open Adhoc display (not replacing and dropping all changes). This is to make adhoc trending of data from SCADA displays possible with all the other benefits of PI Vision. It is something we're currently able to do using PI Processbook using combination of Javascript and VBA to allow controllers to trend tags from our GE system. It's super powerful as it allows controllers to quickly trend data from different analog or digital click points on the same display or different displays and add calculations if needed to make some quick analysis.