True to if this window should remember its position and size
when the program is restarted (or when dialogs are destroyed and re-created).
Note that this is only possible for windows/dialogs that have an ID. The ID is used to memorize the window's position and size in order to restore it later so keep in mind that if you change the window's ID, its position and size settings will get lost (or they will be transferred to another window in case you re-use an ID previously used for a certain window for a new window)
Also note that this attribute defaults to True on Amiga systems because the standard MUI
behaviour is to always remember positions. On all other systems it defaults to False.