Information on when you need to deposit another 1000 USD
The max leverage is essentially the margin collateral ratio which in other terms means the minimum amount of collateral (percentage) the user has to supply to the protocol to borrow another collateral type up to a certain maximum.
If the margin collateral ratio is 5%,
1/0.05 = 20x maximum leverage where 0.05 === 5%.
Or 100/5 = 20x.
Partial liquidations are implemented as a primary priority to maintain protocol trader lifetime by reducing position size to its half life at the index price whilst maintaining an open position.