find an .ascx from a DotNetNuke route by way of going through a .dnn file

Since penning this I have found that my trick for finding an .ascx does not always work. Most recently I found an .dnn (DotNetNuke extension???) file full of XML with a package node containing a route to the .ascx in a node nested inside of the package node, and only by going through the .dnn file could I correlate a route to an .ascx.

Addendum 5/29/2015: Search for the piece of the .aspx "page" name suggested at the URL line before the .aspx itself (and before the preceding forward slash) at a .dnn file to find an applicable configuration.