[pstricks] exclamation mark

[McGarry Vince]

On Aug 15, 2007, at 6:37 AM, Doris Wagner wrote:

> hi list,
>
> sometimes in pstricks-code there are expressions like this:
>
> linecolor=gray!20
>
> I guess that the exclamation mark is something postscript-specific.  
> Can
> anyone explain the meaning of this exclamation mark or tell me where I
> can find something about it in the web?
>
>
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Besides those others have listed, it can also be used to create a  
square graph using psgraph, as in, \psgraph(coord)(coord)(coord){0.7 
\textwidth}{!}

Vince McGarry