* Overlays?
@ 1999-06-05 6:50 David Arnold
1999-06-05 19:32 ` Overlays? Hans Hagen
0 siblings, 1 reply; 2+ messages in thread
From: David Arnold @ 1999-06-05 6:50 UTC (permalink / raw)
All,
Where can I get some discussion and help on overlays? What are they? What
do they do? What's their purpose?
Any examples?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Overlays?
1999-06-05 6:50 Overlays? David Arnold
@ 1999-06-05 19:32 ` Hans Hagen
0 siblings, 0 replies; 2+ messages in thread
From: Hans Hagen @ 1999-06-05 19:32 UTC (permalink / raw)
Cc: ntg-context
David Arnold wrote:
> Where can I get some discussion and help on overlays? What are they? What
> do they do? What's their purpose?
>
> Any examples?
Every commands that takes a 'background' can have a (stack) of overlays.
Overlays themselves are defined by \defineoverlay.
\defineoverlay[myoverlay][all kind of tex things]
\setsomethingup[background=myoverlay]
When more overlays are defined (or color is also used):
\setupsomething[background={color,myoverlay,hisoverlay,heroverlay}]
When the overlay code is executed, one can use the macros \overlaywidth,
\overlayheight, \overlaycolor.
Hans
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