### Comment:
When you sell credit your exposure is to the price of the stock x 100, so you have to have the collateral to back that amount. The debit side of your spread acts as that collateral by limiting your loss to the distance between the spread ( 278 v 277.50 would be 50$)

### REPLY:
Oh you're saying I have to close my credit amount first before closing the debit side, right?

### END.