This is GDS2, a module for creating programs to read, write, and manipulate GDS2 (GDSII) stream files.
GDS2 should be able to handle any size gdsii file but I would consider it too slow for anything larger than a few megabytes in size. If your files are are closer to the gigabyte range please check out my gdt programs at: http://sourceforge.net/projects/gds2/ which you can use to open and process GDS2 files as a pipe from Perl.
2014: after 15 years I'm opening up this module for anyone to help take over in PAUSE (https://pause.perl.org/pause/). Peace, Ken Schumack
perl -le '$=q(Zpbhgnpe@pvnt.uxa);$=~tr/n-sa-gt-zh-mZ/a-zS/;print;'