File Map Window
The File Map Window can be opened and closed by using the Debug4x Main Window's View Menu.  There is no shortcut key.  The File Map Window shows the files that are linked to create a project. This includes temporary files. The map consists of the .lr files used by Debug4x and the HPTools to create the project and track the definitions and references of the various external symbols.

The listing shows the chain of definitions starting with one .lr file and moving to the next.  The names and addresses of the external entries are shown.  Double clicking on an entry will open the Source Code Editor at that symbol (a temporary source may no longer be present).

Entering a string in the box at the top right and pressing enter, expands all branches containing a file with that string. This feature and window was important for the HP49 development because there were more than 1250 files.  It may not be useful for normal project development.