They translate to their Windows equivalents; they control the minimum- and maximum-size of the window, thus preventing you from resizing the window beyond that point.

If there are known bugs with positioning a window below a certain size (i.e. the map dissappears at this point, or other controls dissappear/overlap), you can set min-size to prevent the window from doing this.

Optional feature: if the min-size of a window is greater than the system resolution of the user, either a) maximize the window automatically, b) don't display the window, thus notifying the game about this or c) give an error message stating that the user needs to upgrade his/her screen resolution to one that is compatible with the window that has to appear.

-- Data