files with names <number>_gvec(...).gif
are zoomed/cropped versions of corresponding file gvec(...).gif
where number is the crop-position on the diagonal (and typical crop 
size is 100x100).

crop.sh = script to obtain cropped versions (requires Linux and graphic 
utility "convert" of ImageMagick-package).

for other information on gvec*.gif and gen*dat files => main README file
