By enabling this feature in the Settings menu the software will try to place equivalent bets with different bet types from the one you requested. Even though these bet types may be different in meaning, the payout grids are identical.
For instance, if you asked for under 0.5 goals, we could place a correct score 0-0 bet to try and get more volume for your bet. Another example is when the Asian line is -0.5 and 1x2 is offered you will see both selections in the same Bet Slip as equivalent.
At the BetSlip equivalent bet is shown with a green marked "e" sign which means that the selections are practically the same markets.