Glue automatically embeds "Copyright GeoWorks 1991" in your .geo file.
You can override this and put your own copyright notice (or any notice
you want to put) by passing the -N flag to glue. (The notice can be
up to 32 characters long.)
There are other parameters that you can pass to glue. These are all
documented in section 10.5 of the Tools book (Tools\ttools.txt).
Enjoy.
- -Ed-