function iseffnct(action)
%ISEFFNCT Handles different ISEF subfunctions of GUI.

% Zet de stringvariabelen van de vorm action(1:9) laatst
% -> anders geeft dit een fout

global MENUBARHANDLES 
global SUBMENUHANDLES
global FITHANDLES
global UICTRHANDLES
global XSIZE
global YSIZE
global IMAGENAME
global NEWIMAGENAME
global MAINFIG
global VIEWSIZE
global FILENAME
global FILECHANGED

maxnrofpoints = 12;

if strcmp(action,'start'),
   seterror(' ISEF edge detection');
   isefcall;
else
   seterror(' DEBUG ERROR: ... Invalid option in iseffnct.m');

end
routine('stopadding');