Reduction Factor 
The percentage odds the horses in a race will decrease by if a runner is removed from the race. Similar to Tattersalls Rule 4.

Retained Commission 
The commission ‘held’ by WBX from losing bets already settled in a market which is still active. WBX cannot take this commission yet as the Member may go on to ultimately make a loss on market, in which case this ‘retained commission’ would be returned. 

Returns 
Amount returned to your account following a successful bet. The return includes both the stake and the winnings, after commission. 

Rule 4 
A betting rule which makes deductions from winning bets when a horse is withdrawn before the race, but too soon before the start of the race for the betting market to be adjusted; the amount deducted depends on the price of the withdrawn horse. WBX uses a similar system based on Reduction Factors.