This command toggles (enables and disables) fog of war (FoW). If a province ID is specified, it will be toggled in that province, if not, it will be toggled in all provinces.
fow [province id]
|Optional. The ID of the province you wish to toggle FoW within. If not specified, FoW will be toggled everywhere.
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If FoW is enabled, executing this command will disable it everywhere. If FoW is disabled, executing this command will enable it everywhere.
Memmingen's province ID is 68. This command would toggle fog of war within Memmingen only.