Without placing a wager, a player can see the events and markets available, current odds, payouts and prices, and for pooled markets up-to-date odds for simple pools (with reasonable limits for complex pools), up-to-date pool totals and the dividends of decided markets, on a wagering device or an external display within a venue, as accurately as communication delays allow.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.