On 2013–07–14 Wolfgang Schuster wrote: > Overlays are a framed feature (the page background is a frame too) > and textbackgrounds are images which are drawn on the page like > overlays.
MetaPost graphics can be hooked into the textbackground using the mp and method keys. So apparently there is a way to use arbitrary background graphics. It would be a natural consistent interface if overlays worked with the background key. But I assume it's due to the page break ability of textbackground that makes it more complicated to implement. BTW: Is there any documentation, except the source, about the mp and method keys? Marco
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