This is the file .../info/dir, which contains the
topmost node of the Info hierarchy, called (dir)Top.
The first time you invoke Info you start off looking at this node.

File: dir,	Node: Top	This is the top of the INFO tree

  Test Directory node.

  This (the Directory node) gives a menu of major topics.
  Typing "q" exits, "?" lists all Info commands, "d" returns here,
  "h" gives a primer for first-timers,

* Menu:

Test Info files
* file1: (file1). 
* file-menu: (file-menu). 

* split: (split). 

* non-existent: (non-existent).  Dir reference to non-existent file.

* subdir:(subdir/file-in-subdir).          File in a subdir.
* subdir-split:(subdir/split-in-subdir).   Split file in a subdir.