[DynareDev] [Trac] #123: add external_function to the Reference Manual

#123: add external_function to the Reference Manual ---------------------------+------------------------------------------------ Reporter: michel | Owner: Type: enhancement | Status: new Priority: major | Milestone: 4.2 Component: Documentation | Version: Keywords: | ---------------------------+------------------------------------------------ -- Ticket URL: <https://www.dynare.org/trac/ticket/123> Dynare <http://www.dynare.org> The Dynare project