miscellaneous update

git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@2679 9d0c8265-081b-0410-96cb-a4ca84ce46f8

4 files changed, 12 insertions, 5 deletions

diff --git a/index.html b/index.html
index 2b4902a8..d6d1676a 100644
--- a/index.html
+++ b/index.html
@@ -975,7 +975,7 @@ format.
 the Netpbm formats for still images.  You use it for manipulating
 movies, but not for storing or transmitting them.  The only known use
 of the format is with <a
-href="mjpeg.sourceforge.net"><b>MJPEGTools</b></a>.  The programs
+href="http://mjpeg.sourceforge.net"><b>MJPEGTools</b></a>.  The programs
 <b>pnmtoy4m</b> and <b>y4mtopnm</b> (and predecessors <b>ppmtoy4m</b>
 and <b>y4mtoppm</b>) in that package convert between a Netpbm stream
 and a YUV4MPEG2 stream.  As you might guess from the name, YUV4MPEG2
diff --git a/pamstereogram.html b/pamstereogram.html
index d5c3f83c..4193a0dd 100644
--- a/pamstereogram.html
+++ b/pamstereogram.html
@@ -459,9 +459,9 @@ Netpbm 10.61 (December 2012).
 <li><a href="#parameters">PARAMETERS</a></li>
 <li><a href="#notes">NOTES</a>
 <ul>
-  <li><a href="inputimages">Input Images</a></li>
-  <li><a href="mappedtexture">Mapped-texture Stereograms</a></li>
-  <li><a href="notes_misc">Miscellaneous</a></li>
+  <li><a href="#inputimages">Input Images</a></li>
+  <li><a href="#mappedtexture">Mapped-texture Stereograms</a></li>
+  <li><a href="#notes_misc">Miscellaneous</a></li>
   </ul>
 </li>
 <li><a href="#examples">EXAMPLES</a></li>
diff --git a/pnmpsnr.html b/pnmpsnr.html
index 4204284b..786d1b2b 100644
--- a/pnmpsnr.html
+++ b/pnmpsnr.html
@@ -112,6 +112,13 @@ convenient to have a program process only numbers than to make it deal with
 infinity, and often a very large number has the same effect on a program as
 infinity.
 
+<p>Note that the output is logarithmic, which means you will not see really
+large but finite numbers.  If you specify <b>-max=1000</b>, the only way you
+will see 1000 in the output is if the PSNR is really infinite.  Two images
+with as many pixels as there are electrons in the universe, differing in only
+one pixel, and only in the smallest amount representable in the Netpbm format,
+have a PSNR less than 1000.
+
 <p>This option was new in Netpbm 10.74 (March 2016).
 
 </dl>
diff --git a/sunicontopnm.html b/sunicontopnm.html
index a25a77e3..bfe3c0d7 100644
--- a/sunicontopnm.html
+++ b/sunicontopnm.html
@@ -51,7 +51,7 @@ mostly XPM files.
 <A HREF="pbmtosunicon.html">pbmtosunicon</A>,
 <A HREF="winicontoppm.html">winicontoppm</A>,
 <A HREF="xpmtoppm.html">xpmtoppm</A>,
-<A HREF="xbmtoppm.html">xbmtoppm</A>,
+<A HREF="xbmtopbm.html">xbmtopbm</A>,
 <A HREF="infotopam.html">infotopam</A>,
 <A HREF="pbm.html">pbm</A>
 <A HREF="pgm.html">pgm</A>