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authorgiraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>2020-08-02 18:44:01 +0000
committergiraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>2020-08-02 18:44:01 +0000
commitad48d09aa16cf2c106ba4d0e232c703a75ab5c49 (patch)
tree67fe02ab9d4f8952d6ac8b0aac1674f099f0fd7e /pbmreduce.html
parent56ef5a9528e4eb818db26d7cee8733d46d6cb687 (diff)
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miscellaneous update
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@3905 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'pbmreduce.html')
-rw-r--r--pbmreduce.html11
1 files changed, 8 insertions, 3 deletions
diff --git a/pbmreduce.html b/pbmreduce.html
index 5247d14b..3ec1630c 100644
--- a/pbmreduce.html
+++ b/pbmreduce.html
@@ -13,8 +13,9 @@ pbmreduce - read a PBM image and reduce it N times
 
 <b>pbmreduce</b>
 [<b>-floyd</b>|<b>-fs</b>|<b>-threshold</b>]
-[<b>-value</b> <i>val</i>] <i>N</i>
+[<b>-value</b> <i>val</i>]
 [<b>-randomseed=</b><i>integer</i>]
+<i>N</i>
 [<i>pbmfile</i>]
 
 <p>You can abbreviate any option to its shortest unique prefix.
@@ -27,8 +28,8 @@ pbmreduce - read a PBM image and reduce it N times
 factor of <i>N</i>, producing a PBM image as output.
 
 <p><b>pbmreduce</b> duplicates a lot of the functionality of
-<b>pamditherbw</b>; you could do something like <tt>pamscale |
-pamditherbw</tt>, but <b>pbmreduce</b> is a lot faster.
+<b>pamditherbw</b>; you could do something like <kbd>pamscale |
+pamditherbw</kbd>, but <b>pbmreduce</b> is a lot faster.
 
 <p>You can use <b>pbmreduce</b> to "re-halftone" an image.
 Let's say you have a scanner that only produces black&amp;white, not
@@ -54,6 +55,10 @@ boustrophedonic Floyd-Steinberg error diffusion; however, you can use this
 option to specify simple thresholding.  This gives better results when
 reducing line drawings.
 
+<dt><b>-floyd</b>, <b>-fs</b>
+<dd>Specify the Floyd-Steinberg error diffusion method.  This is the
+default.
+
 <dt><b>-value</b>
 <dd>
 <p>This option alters the thresholding value for all quantizations.  It should