--- a/scripts/general/interpft.m
+++ b/scripts/general/interpft.m
@@ -101,10 +101,9 @@
 %! ti = t(1) + [0 : k-1]*dt*n/k;
 %! y = sin (4*t + 0.3) .* cos (3*t - 0.1);
 %! yp = sin (4*ti + 0.3) .* cos (3*ti - 0.1);
-%! plot (ti, yp, 'g;sin(4t+0.3)cos(3t-0.1);', ...
-%!       ti, interp1 (t, y, ti, 'spline'), 'b;spline;', ...
-%!       ti, interpft (y ,k), 'c;interpft;', ...
-%!       t, y, 'r+;data;');
+%! plot (ti, yp, 'g', ti, interp1(t, y, ti, 'spline'), 'b', ...
+%!       ti, interpft (y, k), 'c', t, y, 'r+');
+%! legend ('sin(4t+0.3)cos(3t-0.1','spline','interpft','data');
 
 %!shared n,y
 %! x = [0:10]'; y = sin(x); n = length (x);