diff --git a/TODO b/TODO
index a3d6bf0..7beb2a8 100644
--- a/TODO
+++ b/TODO
@@ -1,10 +1,12 @@
 tiff2pdf TODO list
-$Id: TODO,v 1.5 2002/01/22 01:40:59 eric Exp $
+$Id: TODO,v 1.6 2003/02/19 02:15:16 eric Exp $
 
 No particular order.  Page numbers refer to _Portable Document Format
 Reference Manual_ by Adobe Systems Incorporated, Addison-Wesley, 1993.
 
 -----------------------------------------------------------------------------
+* bookmark format string processing
+
 * bitblt library:
     * optimize
         * replace inner loops in flip_h and flip_v with Duff's Device
@@ -24,8 +26,6 @@ Reference Manual_ by Adobe Systems Incorporated, Addison-Wesley, 1993.
     * rotation (0, 90, 180, or 270)
     * page number style (D, r, R, a, A)
 
-* no control file mode - just grab all images from TIFF files
-
 * enhance Panda
     * bookmarks (outline)
     * name trees, number trees
@@ -48,5 +48,15 @@ Reference Manual_ by Adobe Systems Incorporated, Addison-Wesley, 1993.
 
 * generate text, line art - option to embed fonts
 
-* overlay G4 images in different colors - automatic separation?
+* overlay G4 images in different colors
   draw overlay images with ImageMask set, using the fill color (p. 79)
+
+* thresholding of color and grey scale input
+
+* automatic separation using timify code from Tim Shoppa?
+
+* automatic image detection using DCT or FFT
+
+* bilevel thresholding
+
+* downsampling