[Slick]

I don't think there is one for specifically what you are looking for. You can manually tag and untag minefields using the menus/hotkeys. The game will automatically mark a minefield that you encounter but don't clear completely with minesweepers. The game USUALLY automatically unmarks a minefield once it is swept; no game command to control this. In my experience there are rare occasions where the marked minefield doesn't get automatically removed when all the mines are gone. I *think* this occurs when you "clear" a minefield by being hit by the last mine; I *think* if the last mine is swept by a minesweeper, the marked minefield is automatically removed. In any case, there is no command that I know of to control auto clearing of minefields.