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From: sfeam <sfeam@users.sourceforge.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: LaTeX in strings like "label" and "title"
Followup-To: comp.graphics.apps.gnuplot
Date: Mon, 19 Dec 2011 10:41:26 -0800
Organization: gnuplot development team
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Gudrun wrote:

> Dear all,
> 
> I don't understand how to achieve $\pm$ in a title or label? $\pm$ is
> LaTeX-Code for +-. I use set terminal postscript as output. Is LaTeX
> $\pm$ possible somehow for this terminal, please?

You can only use LaTeX markup for the various TeX terminals, not for
PostScript.

The ± symbol is octal \261 in the PostScript Symbol font.
All PostScript output devices should support this, as it is one of the
standard fonts.  See the gnuplot documentation for "enhanced text"
for examples of how to change fonts, use superscripts, etc.