Syntax:(saveimg file)
Save current state to an image file. This file is in
.png (portable network graphics) format, which can be
read by many applications varying from graphics programs all the
way to Web browsers.
This function needs an external library called
libpng. If the library wasn't available during
compilation, this function is unavailable too. Please see
INSTALL for more information about obtaining libpng
and recompiling XaoS.
Available as: menu item, command line option, command