This module performs in-place a local zoom of order zero
(pixel duplication) on a Color Char image.
You may specify in $(x,y)$ the center of the local zoom (default
is $(256,256)$), and in $W$ the width of the zoomed box (default is 40).
The factor of the zoom is given by $X$ (default is 2).
\index{zoom!of an image}

For an example of the use of this module, see the ccview module.

