Thanks, Shigeharu Takeno, for kindly taking the time to write to me. For LaTeX2HTML version 1.70 in OpenSuSE-11.1 Linux I found the file l2hconf.pm that you mentioned with the path /usr/lib/latex2html/l2hconf.pm and learned that the "pm" file extension refers to the Perl-module file type. In that file I found two lines reading close to what you wrote:

#$DVIPSOPT .=" -Pdpf" (perhaps with a ";" at the end of it, although I am not sure of this)

and line 136 reading:

$DVIPSOPT= ' -Ppdf -E';

Note that the first of these two lines of code is already commented out with a "#". I commented out the line reading "$DVIPSOPT=' -Ppdf -E'" by placing a # in front of it. Then I saved the file l2hconf.pm and ran my latex2html command on my .tex file of the form Myfile.tex. As usual a folder with a corresponding name of the form Myfile was produced containing .png (Portable Network Graphics) images of mathematical quantities. On inspection of the contents of that folder, thankfully I did not find any .png images with unwanted line segments either below or on the right sides of them! When the output file of the form Myfile.html, which makes use of those .png images, was opened separately in the Konqueror-3.5.10 and Mozilla-Firefox-3.5.2 Web browsers, no unwanted line segments were viewed there either associated with those images. So thankfully and thanks to you, the result was wonderful! And it is now no longer necessary to postprocess images using the Bourne-shell script eqnfix.sh, of which I earlier wrote, in order to remove unwanted, black line segments from the .png images. So this is the simple, easy, and ideal solution!

One mystery remains, at this point a very minor one for me. That is why using LaTeX2HTML 1.70 with the same latex2html command on the same .tex file in Fedora-Core-3 Linux in February of the year 2008 I did not have the unwanted line segments and in OpenSuSE-11.1 Linux in August of 2009 I initially did have them. If the files l2hconf.pm were slightly different in the two cases regarding $DVIPSOPT, that could explain the difference. But if that was not the case, the two different Linux environments would have to explain the difference in performance. In any case, I don't have to solve this mystery now that, thanks to you, Shigeharu Takeno, I have a LaTeX2HTML installation which does not produce the unwanted, black line segments. Again thanks, Shigeharu Takeno, for your kindly taking the time to write me with knowledgeable help!

Pat
----- Original Message ----- From: "Shigeharu TAKENO" <[email protected]>
To: <[email protected]>
Cc: "Pat Somerville" <[email protected]>
Sent: Wednesday, August 26, 2009 8:46 PM
Subject: Re: [l2h] Unwanted black line segments under tall mathematicalexpressions in the OpenSuSE-11.1 Linux environment.


shige 08/27 2009
----------------

"Pat Somerville" <[email protected]> wrote:

Hi, again. I noticed that a few short, Portable-Network-Graphics (PNG) images also had the unwanted black line segments under them. So, sorry, what I wrote
earlier about the problem related to tall images seems to be not entirely
true.--Some tall images and a few short images had the black line segments
under them.

If your configuration file l2hconf.pm includes the following line

$DVIPSOPT .= " -Ppdf";

comment out the line. The option '-Ppdf' in $DVIPSOPT may cause
the problem.

+========================================================+
Shigeharu TAKENO     NIigata Institute of Technology
                      kashiwazaki,Niigata 945-1195 JAPAN
[email protected]   TEL(&FAX): +81-257-22-8161
+========================================================+


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