Hi Ben,

It's been this way for a while now.

Once upon a time, you could tell Guide to show images from
(say) 0 to 90 degree fields, turn them on, zoom out to 90 degrees,
and... wait a _very_ long time as thousands of images, some reduced
to .1 pixel by .1 pixel, were drawn. People usually assumed the
program had locked up. So I added some logic that basically says:
if the image would be below some minimum size, don't draw it.

That minimum size defaults to 40 pixels. You can hit Alt-J and enter,
for example,

MIN_IMG_SIZE=20

to reduce that to twenty pixels, allowing you to zoom out by a factor
of two and still see the same images.

-- Bill