background color -- Re: Plot placement, revisited

[<mi...@ph...>]

>> However, is there a color number for background? I.e.
>>    set key opaque color lt -2
>> or like that?
>
> Yes, at least partially.
>
> I went through prior to the version 4.0 release and made
> many terminals honor LT_BACKGROUND (-2) when setting
> a color.  But I could not check all the terminals, and I did not add it
> to the documentation because the work was not complete.> Please feel free to go ahead and test this on os2, windows,
> and the various other terminal types I can't test easily.

I have tried to use it by overprinting a label with "textcolor lt -2" over
a pm3d plot, but it never used the background (white) color --- I tried
for postscript, png, x11. Do you have a successful example of the feature?
> I had vague ideas of making "background" or "bkg" a legal
> linetype specifier, since that is more obvious than saying
>    plot 'data' with boxes lt bkg
> than
>    plot 'data' with boxes lt -2

That could be a constant...

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PM