[GRASSLIST:1980] PNG driver and zooming

[Riaz Randeree]

Hi

I use the PNG driver to generate PNG images.
How can I zoom non-interactively (i.e. without a mouse) ?
I want to display some raster and vector maps and then zoom (or pan) into
the result,
and end up with a PNG file.

Also is it possible to store maps of the different resolutions within GRASS,
and if you want to zoom in, to switch to the map of greater resolution.

Any help would be greatly appreciated.

Many thanks in advance
Riaz Randeree