am I using version right?

[DFTW]

	version(Windows)
	{
		writeln("Hello from Windows system!");
	}
	else version(linux)
	{
		writeln("hello from linux!");
	}
	else static assert(0, "unknow system!");

In that code, the static assert() will run if and only if neither 
version condition is true, i.e, the OS is neither Windows nor 
linux. Correct?
My question is due version-else, I'm unsure if version-else works 
the way it does with regular if and the static assert() will not 
run at compile-time, regardless whether version is true