--- a/djvu.rst	Fri Sep 19 20:04:24 2014 +0300
+++ b/djvu.rst	Sun Sep 28 23:21:15 2014 +0300
@@ -50,6 +50,10 @@
   $ ddjvu -format=tiff book.djvu book.tiff
   $ tiff2pdf -o book.pdf book.tiff
 
+or directly::
+
+  $ ddjvu -format=pdf book.djvu book.pdf
+
 pdf to djvu.
 ============
 
@@ -72,24 +76,31 @@
   http://code.google.com/p/pdf2djvu/
                 home page
 
-jpg to djvu.
-============
-
-JPEG to bitonal DjVu.
----------------------
-::
+JPEG to Djvu.
+=============
 
-  $ anytopnm page.djvu | ppmtopgm | pgmtopbm -value 0.499 > page.pbm
-  $ cjb2 -dpi $DPI page.pbm page.djvu
-
-  $ djvm -c $OUTFILE $MASK.djvu    # Many .djvu to single .djvu.
+JPEG to high quolity DjVu (DjVuPhoto encode)::
 
+  $ c44 -dpi $DPI  $FROM.jpg  $TO.djvu
 
-JPEG to low colour DjVu.
-------------------------
-::
+JPEG to low colour DjVu::
 
   $ cpaldjvu -dpi $DPI -colors $NCOLORS $i $i.djvu
 
-  $ djvm -c $OUTFILE $MASK.djvu    # Many .djvu to single .djvu.
+  $ djvm -c $OUTFILE *.djvu    # Many .djvu to single .djvu.
+
+JPEG to bitonal DjVu::
+
+  $ convert  $PAGE.jpeg  $PAGE.pbm
+  $ cjb2 -dpi $DPI  $PAGE.pbm  $PAGE.djvu
+
+  $ djvm -c $OUTFILE *.djvu    # Many .djvu to single .djvu.
 
+if you don't like default delev of balck adjust options::
+
+  $ convert -solarize 50% -level 0,50%  $PAGE.jpeg  $PAGE.pbm
+
+or::
+
+  $ convert  $PAGE.jpeg  pgm:- | pgmtopbm -value 0.499 > page.pbm
+