It's better explained in solidity: https://github.com/homakov/xlncontracts/blob/main/contracts/xln.sol#L350 https://github.com/homakov/xlncontracts/blob/main/c

It's better explained in solidity: https://github.com/homakov/xlncontracts/blob/main/contracts/xln.sol#L350 https://github.com/homakov/xlncontracts/blob/main/contracts/... it is withdrawn from a special intermediary "reserve" balance OR a Debt is created on this identity.