No . or .. on NextFile

I don't want to have a . or .. when I scan for folders.

	tdir = ReadDir("modules")
	Repeat
		f$ = NextFile(tdir)
		If FileType(f$) = 0 Then Exit
		If FileType("modules"+f$) = 2 Then
			Game_Mod$ = "modules"+f$
			DebugLog Game_Mod$
		EndIf
	Forever