Info-virtual-files

Info-virtual-files is a variable defined in `info.el'.
Its value is shown below.

Documentation:
List of definitions of virtual Info files.
Each element of the list has the format (FILENAME (OPERATION . HANDLER) ...)
where FILENAME is a regexp that matches a class of virtual Info file names.
It should be carefully chosen to not cause file name clashes with
existing file names. OPERATION is one of the following operation
symbols `find-file', `find-node', `toc-nodes' that define what HANDLER
function to call instead of calling the default corresponding function
to override it.

Value:

(("\\`\\*Finder.*\\*\\'"
  (find-file . Info-finder-find-file)
  (find-node . Info-finder-find-node))
 ("\\`\\*Apropos\\*\\'"
  (toc-nodes . Info-apropos-toc-nodes)
  (find-file . Info-apropos-find-file)
  (find-node . Info-apropos-find-node)
  (slow . t))
 ("\\`\\*History\\*\\'"
  (toc-nodes . Info-history-toc-nodes)
  (find-file . Info-history-find-file)
  (find-node . Info-history-find-node))
 ("\\`dir\\'"
  (toc-nodes . Info-directory-toc-nodes)
  (find-file . Info-directory-find-file)
  (find-node . Info-directory-find-node)))