--- a/main/image/inst/private/istform.m	Sat Apr 27 19:17:33 2013 +0000
+++ b/main/image/inst/private/istform.m	Sun Apr 28 02:31:13 2013 +0000
@@ -1,29 +1,22 @@
 ## Copyright (C) 2012 Pantxo Diribarne
-## 
+##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
 ## the Free Software Foundation; either version 3 of the License, or
 ## (at your option) any later version.
-## 
+##
 ## This program is distributed in the hope that it will be useful,
 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ## GNU General Public License for more details.
-## 
+##
 ## You should have received a copy of the GNU General Public License
 ## along with Octave; see the file COPYING.  If not, see
 ## <http://www.gnu.org/licenses/>.
 
-## -*- texinfo -*-
-## @deftypefn  {Function File} {[@var{UV}] =} tformfwd (@var{T}, @var{XY})
-## @deftypefnx {Function File} {[@var{U} @var{V}] =} tformfwd (@var{T}, @var{X},@var{Y})
-## 
-## Given to dimensionnal coordinates from one space, returns two 
-## dimensionnal coordinates in the other space, as defined in 
-## the transform structure @var{T}. Input and output coordinates 
-## may be gigen either as a n-by-2 arrays, or as two n-by-1 vectors.
-## @seealso{maketform, cp2tform, tforminv}
-## @end deftypefn
+## Private internal function to check if a argument is a transformation
+## structure (as created by maketform and to be use by findbounds,
+## imtransform, and the like)
 
 ## Author: Pantxo Diribarne <pantxo@dibona>
 
@@ -35,7 +28,7 @@
     required = {"ndims_in";"ndims_out"; ...
                 "forward_fcn"; "inverse_fcn"; ...
                 "tdata"};
-  
+
     fields = fieldnames (T);
     tst = cellfun (@(x) any (strcmp (fields, x)), required);
     if (! all (tst))