% -*- texinfo -*-
% @deftypefn {Function File} {} pmt (@var{r}, @var{n}, @var{a}, @var{l}, @var{method})
% Return the amount of periodic payment necessary to amortize a loan
% of amount a with interest rate @var{r} in @var{n} periods.
%
% The optional argument @var{l} may be used to specify a terminal
% lump-sum payment.
%
% The optional argument @var{method} may be used to specify whether
% payments are made at the end (@var{'e'}, default) or at the beginning
% (@var{'b'}) of each period.
% @seealso{pv, nper, rate}
% @end deftypefn