--- a/src/save.cc
+++ b/src/save.cc
@@ -19,6 +19,7 @@
 DEFUN_DLD (save, args, , "-*- texinfo -*-\n\
 @deftypefn {Function File} \
 fem_save (@var{Function}, @var{Name})\n\
+Save a function in vtu format.\n\
 The input parameters are\n\
 @itemize @bullet \n\
 @item @var{Function} is the function that you want to save\n\