The xmag(1) program allows you to magnify portions of an X
screen. If no explicit region is specified, a square with the
pointer in the upper-left corner is displayed indicating the area
to be enlarged. The area can be dragged out to the size you want by
pressing Button 2. After a region has been selected, a window pops
up showing a blown-up version of the region in which each pixel in
the source image is represented by a small square of the same
color. Pressing Button 1 in the enlargement window shows the
position and red-green-blue (RGB) value of the pixel under the
pointer until the button is released. Typing Q or ^C
in the enlargement window exits the program.
The application has the following five buttons across the
Delete this particular magnification instance.
Bring up the rubber-band selector again to select another
region for this magnification instance.
Bring up the rubber-band selector to create a new magnification
Put the magnification image into the primary selection.
Copy the primary selection buffer into xmag(1).
You can cut and paste between xmag(1) and the
bitmap(1) program. Resizing xmag(1) resizes the
magnification area. The xmag(1) utility preserves the
colormap, visual, and window depth of the source.