Elmer, great explanation, thanks a lot! Is it correct to assume that there´s no real risk for the CC writer in your example, apart from "missing" out on potential gains of the stock he already owns?
Not quite sure about the premium, is it a fixed amount that is determined at the point the contract between the seller and the buyer is concluded? When will the seller get this premium, right away or at the end of the "deal"?
The opposite of a "Call" is a "Put" and we can discuss that too if you like.
Whenever you find the time!