arguments to the main function throught runhugs

"thiagohb" <[email protected]>
Newsgroups gmane.comp.lang.haskell.hugs.bugs
Message-ID <[email protected]> 
Hello,
I'm a student in Ouro Preto's University (Brazil) and I have a problem:
How can I pass arguments to the main function throught runhugs?
I'll need to use a string in the main function. How can I catch the string 
from command line? 

For example:
runhugs main.hsx test 

Thank you.
Thiago Braga.
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