Re: Option 'ai' in Postscript terminal

[Harald H. <h.h...@tu...>]

> You are right, and I was unduly accepting of the first line of the
> output file, which has been
>    %!PS-Adobe-2.0
> since at least gnuplot version 3.7

This is not the Postscript level but the Version number of the DSC
comment structure. Version 3.0 of the "PostScript Language Document
Structuring Conventions Specification" is dated 25 September 1992, long
before Postscript Level 3 has been started. The Postscript header does not
specify which Postscript level is used.

> In a quick check of the source for Level 2 extensions listed in the
> PostScript reference manual I don't see any obvious ones. I am not
> sure about whether our code assumes Level 2 behaviour with
> regard to font encodings.

I will have a look to the Postscript Language Reference to find out if we
really are free of level2 code.

> However, Daniel's upcoming binary + image patch depends on the
> Level2 operator "filter", so we will have to keep an eye on that.

We should speak to him to ensure that also the filter operator is not used
when using level1.

--=20
Harald Harders                           Langer Kamp 8
Technische Universit=E4t Braunschweig      D-38106 Braunschweig
Institut f=FCr Werkstoffe                  Germany
E-Mail: h.h...@tu...               Tel: +49 (5 31) 3 91-3062
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