texinfo-make-menu
texinfo-make-menu is an interactive autoloaded compiled Lisp function in `texnfo-upd.el
'.
(texinfo-make-menu &optional BEGINNING END)
Without any prefix argument, make or update a menu.
Make the menu for the section enclosing the node found following point.
A prefix argument means make or update menus
for nodes within or part of the marked region.
Whenever a menu exists, and is being updated, the descriptions that
are associated with node names in the pre-existing menu are
incorporated into the new menu.
Leaves trailing whitespace in a menu that lacks descriptions, so
descriptions will format well. In general, a menu should contain
descriptions, because node names and section titles are often too
short to explain a node well.