How do I make Game Genie txt files?

Do I have to make a separate one for each game?
Is there a certain format I need to put them in or just type all the codes out in a row?

 

when you load gg from txt, all codes from those txt file will be applied to currently flashed rom.
codes should be written in a column:
xxxx-xxxx
yyyy-yyyy

 

That's simple enough, thanks KRIKzz.

 

just make sure to use vi or windows notepad, other programs seem to add stuff

 

i use windows notepad