The sharing of the vision on the map can be enabled with "ShareVision".
And currently, there is no way to cancel the sharing of the vision on the map.
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ShareVision(p1, p2)
p1: the player who will share his vision of the map.
p2: the player who will receive the vision of the map.
p1 and p2: can be set from "0" to "5".
Allows player number "p2" to see everything that player number "p1" can see.
Note that player number "0" is the first human player, not necessarily the blue player.
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CancelShareVision (p1, p2)
P1: the player who cancels the sharing of his vision of the map.
P2: the player who no longer receives the vision of the map.
P1 and p2: can be set from "0" to "5".
Cancels the sharing of the vision of the map from player number "p1" to player number "p2".