Writing option tokens is a core feature of option trading since it is effectively shorting the option token. The design of Primitive enables short option positions to be purchased directly. To write option tokens, select an option and click on the "Sell" button. This order type is to "Sell to Open", effectively shorting an option token to open a position. Note: if long option tokens are held, this sell order will sell the long option tokens. There must be a wallet balance of 0 long option tokens to sell to open a position.