What does Repay/Recall in SLB mean, or how to foreclose the SLB position?

Repay

When a borrower wishes to return shares, they can return them to the exchange, and they do not have to wait for the settlement period to end. Exchanges will reverse the margin amount the same day the shares are returned.

Recall

When the lender wants their shares back before the expiry of the contract, they have an option of recalling the shares by placing a recall order in the same series in which it is lent. However,  this isn’t guaranteed as it depends on the price and open orders. The lender can also recall the shares at the market rate if they require the shares back urgently.

To check live quotes and place orders, see How to check live quotes and place orders for SLB?