Is it possible to zoom into a specific part of the page? I am thinking of the following scenario. Suppose I have the following document

\input knuth


\input tufte


I want that when I click on the image, the pdf is zoomed in so that the image occupies the full screen[1], and when I click on the zoomed in image, it zooms out and I get the previous page view.

How do I achieve this? I am guessing that some javascript magic might be needed, but I do not understand the interaction code at all. This feature will be pretty handy for presentations.


[1]: I do not know if the pdf reader knows the screen size. Assuming that the screen aspect ratio is the same as the page aspect ratio might be a good approximation (at least for presentations).
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