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Thank you, Bruno/Ross, for that most useful suggestion. I am
delighted to confirm that with the following modification to "Hoi-An
TA Menu (combine pages).tex", all works as intended :<br>
<br>
<blockquote type="cite">% !TeX Program=XeTeX-W18
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;">\immediate
\write 18 {XeTeX "Hoi-An TA menu (separate pages).tex"}</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;">\special
{background cmyk 0.83 0.82 0.21 0.60}</p>
</blockquote>
<br>
"XeTeX-W18" is a just-added custom addition to the command set known
to TeXworks, and adds "--shell-escape" to the head of the
parameter/qualifier string passed to XeTeX if it is called as
"XeTeX-W18".<br>
<br>
I continue to believe that enhancing the PDF-generating family of
TeX-derived engines to allow the output PDF file to be closed
mid-job would be beneficial, but clearly it is not necessary in this
case. <br>
<br>
As to "make" files, I confess that I have always steered clear of
them for two unrelated reasons :<br>
<ol>
<li>I find the "make" syntax more than a little opaque, favouring
(as it does) brevity over clarity;<br>
<br>
</li>
<li>I feel that, by eliminating the need to <i>think </i>about
what one is doing (and why one is doing it), "make" is a
potentially dangerous tool, and the more steps there are to a
successful "make", the more dangerous it is. OK, for two steps,
as in this case, the dangers are minimal, but in general I
prefer documented instructions that require one to <i>think </i>about
what one is doing, what one has already done, and what one is
about to do ...<br>
</li>
</ol>
<p><i>** Phil.</i><br>
</p>
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