--- a/scripts/image/saveimage.m
+++ b/scripts/image/saveimage.m
@@ -17,30 +17,32 @@
 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 ## 02111-1307, USA.
 
-## Save a matrix to disk in image format.
-##
-## saveimage (filename, x) saves matrix x to file filename in octave's
-## image format.  The current colormap is saved in the file also.
-##
-## saveimage (filename, x, "img") saves the image in the default format
-## and is the same as saveimage (filename, x).
-##
-## saveimage (filename, x, "ppm") saves the image in ppm format instead
-## of the default octave image format.
-##
-## saveimage (filename, x, "ps") saves the image in PostScript format
-## instead of the default octave image format. (Note: images saved in
-## PostScript format can not be read back into octave with loadimage.)
-##
-## saveimage (filename, x, format, map) saves the image along with the
-## specified colormap in the specified format.
-##
-## Note: If the colormap contains only two entries and these entries
-## are black and white, the bitmap ppm and PostScript formats are used.
-## If the image is a gray scale image (the entries within each row of
-## the colormap are equal) the gray scale ppm and PostScript image
-## formats are used, otherwise the full color formats are used.
-##
+## @deftypefn {Function File} {} saveimage (@var{file}, @var{x}, @var{fmt}, @var{map})
+## Save the matrix @var{x} to @var{file} in image format @var{fmt}.  Valid
+## values for @var{fmt} are
+## 
+## @table @code
+## @item "img"
+## Octave's image format.  The current colormap is also saved in the file.
+## 
+## @item "ppm"
+## Portable pixmap format.
+## 
+## @item "ps"
+## PostScript format.  Note that images saved in PostScript format can not
+## be read back into Octave with loadimage.
+## @end table
+## 
+## If the fourth argument is supplied, the specified colormap will also be
+## saved along with the image.
+## 
+## Note: if the colormap contains only two entries and these entries are
+## black and white, the bitmap ppm and PostScript formats are used.  If the
+## image is a gray scale image (the entries within each row of the colormap
+## are equal) the gray scale ppm and PostScript image formats are used,
+## otherwise the full color formats are used.
+## @end deftypefn
+
 ## The conversion to PostScript is based on pbmtolps.c, which was
 ## written by
 ##
@@ -49,7 +51,7 @@
 ##   University of British Columbia
 ##
 ## and is part of the portable bitmap utilities,
-##
+
 ## SEE ALSO: loadimage, save, load, colormap
 
 ## Author: Tony Richardson <arichard@stark.cc.oh.us>