### Comment:
You are selling call/puts to open, which basically means you are willing to sell 100 shares of whatever stock at whatever price at whatever time you sold, that often has a premium associated with it which would be a credit. 
  
 Often known as a synthetic short, you can sell deep in the money calls, which is very close to selling a stock short, you are probably better off buying puts if you want to “short” a stock as it’s much safer

### REPLY:
just barely understand but thanks

### END.