lock_periodis applied to the returned UST after a short position is created (set to 2 weeks at the launch of Mirror v2). User may choose to close their short position at any time by buying the shorted amount from Terraswap, but the UST from shorting might be within the
lock_period. To use the UST from shorting to close the position, user must wait until the lock period ends, and claim the corresponding amount.
weightparameter of each mAsset. mAsset pools as well as the MIR pool. All mAsset-UST staking pools receive a weight of 100 (newly whitelisted mAssets will have weight of 30), while the MIR pool receives a weight of 300. Therefore, there is a stronger reward incentive to stake to MIR pool as they confer 3 times the reward when staked relative to mAssets.