Scene numbers are appended to scene headings between # #
(hash). Fountain Mode can automatically add scene numbers for you.
Bound to C-c C-x #, add scene numbers to scene headings in current buffer. Remove scene numbers by prefixing with C-u.
Whether scene numbers are applied or not, you can still navigate by scene number. See Navigation.
Scene numbers can be displayed in the window margins.
Display scene numbers in left and right margins.