<div dir="ltr"><div>Dear Carles,<br><br></div>.tex is not a generally known extension. It is a plain gtext file yet it is not guaranteed that it will always have a MIME type of text/plain. Even if you have a specialized editor for TeX installed, it is possible that association will not be found. On my Linux computer it is sometimes opened in TeXmaker, sometimes it cannot be opend and I have to save it to my local disk. Anyway, even if you manage to open it directly from the e-mail in some IDE, the permission might not allow you to process the file. You almost always have to save the file to your disk.<br><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature">Zdeněk Wagner<br><a href="http://ttsm.icpf.cas.cz/team/wagner.shtml" target="_blank">http://ttsm.icpf.cas.cz/team/wagner.shtml</a><br><a href="http://icebearsoft.euweb.cz" target="_blank">http://icebearsoft.euweb.cz</a></div></div>
<br><div class="gmail_quote">2016-08-14 9:48 GMT+02:00 Philip Taylor <span dir="ltr"><<a href="mailto:P.Taylor@rhul.ac.uk" target="_blank">P.Taylor@rhul.ac.uk</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="font-size:12pt;color:#000000;background-color:#ffffff;font-family:Calibri,Arial,Helvetica,sans-serif">I
am an absolute novice in LaTeX. I have installed TeX Live 2015
on my PC (Windows 7 Home Premium), but I don't know how can I
open and manipulate this attached file (eq15.tex).</div>
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Dear Carles --<br>
<br>
(1) Make sure you installed everything (I think this is referred to
as "Collection: full" by the installer, but I may be wrong)<br>
(2) Click Start / all programs / TeX Live 2016 / TeXworks 2016<br>
(3) When TeXworks has launched, click File / Open and browse for
"eq15.tex"<span class="HOEnZb"><font color="#888888"><br>
<br>
<div>-- <br>
<img src="cid:part1.05030406.02030907@Rhul.Ac.Uk"><br>
Philip Taylor</div>
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