[NTG-context] Replacing a piece of a paper

luigi scarso luigi.scarso at gmail.com
Tue Jan 11 17:53:46 CET 2011

2011/1/11 Procházka Lukáš Ing. - Pontex s. r. o. <LPr at pontex.cz>:
> Hello,
> I'm trying to handle a special problem. I guess ConTeXt would be useful for
> this purpose, although its primary function is to typeset. But -
> I have many drawings - they are black-and-white one-sided PDFs of A1 or A2
> size (typical technical drawings).
> The bottom right area of size 210 x 330 mm should be "deleted" - or
> over-painted by a white rectangle (or picture or MP code).
> And next a new PDF of A4 size should be placed on the right bottom area,
> just on the white ("deleting") area.
> I wouldn't have problem with batch processing the number of files.
> But I would need an example how to take the original A2 PDF, place a
> whitening area on it and then to place a new PDF over it; I'm not
> experienced enough in "layering" with ConTeXt and I guess this may be the
> way.
> Would it be possible to provide a small example of such processing an
> arbitrary file?
I always use this as starting point

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