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    OK, looking beyond compilation errors (none: the %-sign was clearly
    not causing a problem), I see :<br>
    <br>
    <blockquote type="cite">Errors: 0, Warnings: 16, Bad boxes: 0
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                text-indent:0px;"><a
                  href="texworks:./percentagebreaker-1.tex#10"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                text-indent:0px;">10</p>
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                margin-left:0px; margin-right:0px; -qt-block-indent:0;
                text-indent:0px;">Class scrbook Warning: Usage of
                package `fancyhdr' together with a KOMA-Script class is
                not recommended. I'd suggest to use package `scrlayer'
                or `scrlayer-scrpage', because they support KOMA-Script
                classes. With `fancyhdr' several features of class
                `scrbook' like options `headsepline', `footsepline' or
                command `\MakeMarkcase' and the commands `\setkomafont'
                and `\addtokomafont' for the page style elements need
                explicite user intervention to work. Nevertheless, using
                requested package `fancyhdr' on input line 10.</p>
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                text-indent:0px;"><a
                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                font 'Linux Libertine O' with script 'CustomDefault' and
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                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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              <p style=" margin-top:0px; margin-bottom:0px;
                margin-left:0px; margin-right:0px; -qt-block-indent:0;
                text-indent:0px;">Package fontspec Warning: OpenType
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                font 'Linux Libertine O' with script 'CustomDefault' and
                language 'Default'.</p>
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                text-indent:0px;"><a
                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                text-indent:0px;"><a
                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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                  href="texworks:./percentagebreaker-1.tex"><span
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                  href="texworks:./percentagebreaker-1.tex"><span
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                  href="texworks:./percentagebreaker-1.tex#78"><span
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                  href="texworks:./percentagebreaker-1.tex"><span
                    style=" text-decoration: underline; color:#0000ff;">percentagebreaker-1.tex</span></a></p>
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    </blockquote>
    <br>
    None of those can I help with, I am afraid — they are all
    LaTeX-specific, about which I know less than nothing.<br>
    <i>Philip Taylor</i><br>
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