[Greasemonkey] Can I call another gmscript already installed in the my browser?

[Vikas Pandey]

Heard that ie's Turnabout can have a matadata "@Library" field instead 
of @name (in such case @name MUST NOT be there). Other Turnabout scripts 
installed on the same browser can call these library scripts.

Can I simulate that in gm?

Can I and How can I call from one gmscript another gmscript? Assume that 
both gmscripts are already installed in the my browser.

Thanks.