gametree-make-heading-function

gametree-make-heading-function is a variable defined in `gametree.el'.
Its value is

(lambda (level) (insert (make-string level 42)))

• This variable may be risky if used as a file-local variable.

Documentation:
A function of one numeric argument, LEVEL, to insert a heading at point.
You should change this if you change `outline-regexp'.

You can customize this variable.