[Gandalf Parker]

OK something was brought to my attention that I hadnt thought to explain before.
When the command switch list has something like
-r --res X Y Set screen resolution / window size (default=1024 768)
and you want to change that, you use either -r X Y OR --res X Y
Do not put -r --res X Y

Longer trivia:
both versions do the same thing.
--res is the way Linux prefers switches (the home operating system of the game)
-r is Windows preference. Considering the 255 character limit in Windows of building a command line using the shorter version can be handy for Win users