this is a feature request for having the ability to use `fill-paragraph' on headings.  An example from Emacs news:

'*** New variable 'xterm-set-window-title' controls whether Emacs sets the XTerm window title. The default is to set the window title.'

-> '*** New variable 'xterm-set-window-title' controls whether Emacs
sets the XTerm window title.  The default is to set the window title.