Info-streamline-headings

Info-streamline-headings is a variable defined in `info.el'.
Its value is

(("Emacs" . "Emacs")
 ("Programming" . "Programming")
 ("Libraries" . "Libraries")
 ("World Wide Web\\|Net Utilities" . "Net Utilities"))

Documentation:
List of elements (RE . NAME) to merge headings matching RE to NAME.