Shows or hides the grid world view V = GRIDWORLD_DISPLAY(GW[, VISIBLE[, UPDATE]]) Shows or hides the grid word view. If the UPDATE argument is present, the view is updated to be consistent with the world state. If on the other hand the argument is not present, but the view needs to be shown and knows it is tainted (not consistent with the state of the world) an automatic complete update will be performed. Parameters: GW - the grid world VISIBLE - (optional) whether the view should be shown (1) or hidden (0). By default, the view will be shown. UPDATE - (optional) if present, specifies that the view should be updated for consistency with the world state. May be either the string 'all', in which case all the grid is updated, or a vector of bounds [Xmin Xmax Ymin Ymax], in which case only the specified area (including edges) is updated. Returns: GW - the updated gridworld See also gridworldview, gridworld_advance