Hide Windows cursor is a double cursor fix needed for some games after using alt-tab, this will prevent the windows cursor from showing over the game window, this can be annoying as games usually draw their own cursors and you can end up seeing more than one responding to mouse input in different ways, this problem tends to happen when games are run in windowed mode. Not all games need it, and some known games will have this option disabled by design.
Windowed mode relocation moves the game’s main window so it ends up looking as if you were playing in exclusive full screen mode, it also removes the standard window borders, to achieve this effect you must configure the game to run at the same resolution as the Window’s desktop.
Enable VSync enables the synchronization of the game with the monitor's refresh rate.
Language changes the interface language, it also changes the language of the help web pages if they are available.