MDIs (multiple document interfaces - https://en.wikipedia.org/wiki/Multiple-document_interface https://en.wikipedia.org/wiki/Multiple-document_interface) are gr

MDIs (multiple document interfaces - https://en.wikipedia.org/wiki/Multiple-document_interface https://en.wikipedia.org/wiki/Multiple-document_interface) are great for some desktop apps but they don't translate very well to the web mainly because you can't deep link to a window set unless you use something like a persistent session id that keeps track of the window state on the server.