Re: key width

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John wrote:
> I'm using the pslatex terminal of gnuplot.
> Everything works fine but the annoying thing is that the default key width is
> proportional to the number of characters contained in the title. However, the
> numbers of characters produced by the LaTeX code $\\delta=1$ (see code below)
> are less and so everytime I have to adjust the key width by hand.
> Is there a trick or a regular feature to deal with this problem?

Sort-of. It's the only you already found: overriding the key width by 
hand.  Short of embedding a complete TeX implemention inside gnuplot, 
that's all that can be done.